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Science and Technology News, Science Articles | Discover Magazine

Science news, articles, current events and future views on technology, space, environment, health, and medicine.

Pumped Milk Gives Infants Different Bacteria Than Breastfeeding, Study Says  

Mother's milk provides sustenance for babies. Now researchers find pumped breast milk exposes newborns to more disease-causing bacteria than milk directly from the breast. The discovery suggests breastfeeding practices could shift the makeup of microorganisms in breast milk and infants' digestive systems. "We were surprised that the method of feeding was the most consistent factor associated with milk microbiota composition," said Meghan Azad, a medical geneticist at the Childrenâ...

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2019-02-15 20:10:58

NASA Wants to Return to the Moon as Early as This Year  

In November, NASA tapped nine private spaceflight companies who will be allowed to bid on upcoming projects. Yesterday, they elaborated on what those projects would be during an industry forum. Starting as early as this year, NASA hopes to send commercial landers to the lunar surface as the first step toward returning to the moon, this time for good. Long Lunar To-Do List There's a lot of work to be done before permanent or long-term lunar activities can begin. The first tasks will be to...

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2019-02-15 09:07:21

Climate Change Hearings Signal Congress Is Willing to Address the Issue Again  

Climate change is real. It's happening now. And it presents significant problems for the U.S. across multiple facets of society, according to a panel of climate and policy experts that testified before the House Science, Space and Technology Committee Wednesday in Washington, D.C. The testimonials were part of the House Science Committee's first full hearing of the 116th Congress and one of only a handful in the last eight years to address climate change. But that's about to change. In h...

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2019-02-15 04:26:17

Mice Deprived of 'Love Hormone' Oxytocin Sit Alone in the Cold  

(Inside Science) -- Perhaps it's not a coincidence that Valentine's Day falls at a chilly time of year. In biological terms, social drives like love may be bound up with the need to keep warm. The same hormone, oxytocin, helps regulate both physical and emotional warmth, increasing body heat and facilitating social bonding. And according to recent research, baby mice deprived of the hormone are less likely to cuddle with other mice or crawl toward heated surfaces. "We're working with i

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2019-02-15 03:29:10

Researchers Create 'Rat Cyborgs' That People Control With Their Minds  

I'll just come right out and say it: Scientists have created human-controlled rat cyborgs. Lest you think this is some media sensationalism at work, here's the actual title of the paper under discussion, which came out last week in Scientific Reports: "Human Mind Control of Rat Cyborg's Continuous Locomotion with Wireless Brain-to-Brain Interface." That pretty much says it all. Some of this tech — such as brain-brain interfaces (BBIs) and rat cyborgs — is nothing new in s...

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2019-02-15 01:37:50

Just in time for Valentine's Day, the ocean and atmosphere have coupled — giving birth to a weakling El Niño  

It's finally here. This morning, the National Oceanic and Atmospheric Administration made it official: El Niño conditions are present in the tropical Pacific Ocean. There's a 90 percent chance that they'll continue through winter, and a 60 percent chance through spring. True to predictions, this El Niño is a weakling. Climate scientist Emily Becker summarized the situation at the ever-awesome ENSO blog: After several months of flirting, the tropical Pacific ocean and atmosphere ...

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2019-02-14 07:51:17

NASA Declares 'Mission Complete' For Opportunity Rover  

On January 24, 2004, the Opportunity rover sent back its first signal from the Red Planet. That marked the start of a 90-day planned mission for the six-wheeled, golf cart-sized rover. Fifteen years later, the rover's mission has finally ended, NASA announced today. Its longevity and discoveries are a testament to Opportunity's design and construction. The rover ultimately sent back more than 200,000 raw images and traveled a total of 28 miles (45 kilometers), farther than a standard ...

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2019-02-14 04:36:50

Meet Mnyamawamtuka: The New Tanzanian Titanosaur  

Hailing from East Africa, the newly described giant, plant-eating dinosaur Mnyamawamtuka moyowamkia lived around 100-110 million years ago, during the middle of the Cretaceous. The animal, a member of the titanosaur lineage, is helping paleontologists understand how, where and when the mightiest of land animals evolved. Sauropodomorphs are some of the most common and geographically diversely dinosaurs in the fossil record, and their shape — small head, long neck, big torso, elephant...

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2019-02-14 04:06:28

Reprogrammed Human Pancreatic Cells Treat Diabetes in Mice  

Nearly 10 percent of Americans have diabetes, a chronic condition where the body does not process sugar. Diabetics either do not make enough insulin — a hormone that acts like a key to let sugars into cells to use for energy — or cells stop responding to insulin. As a result, sugar builds up in the bloodstream leading to high blood sugar. Over time, high blood sugar can give rise to nerve damage and heart disease among other complications. Now researchers have reprogrammed human cells...

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2019-02-14 03:19:22

This Is What Your City Might Feel Like in 60 Years Due to Climate Change  

(Inside Science) -- In 60 years, the climate of Pittsburgh, Pennsylvania, will feel kind of like a contemporary Jonesboro, Arkansas, with higher temperatures and more winter precipitation, according to a new study. That's assuming fossil fuel emissions continue to rise; if instead we succeed in curbing emissions, Pittsburgh will instead become more like Madison, Indiana. Pittsburgh is one of 540 cities in the U.S. and Canada for which scientists have found doppelgangers of their climate f

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2019-02-14 03:01:21

The Greatest Discoveries From NASA's Mars Opportunity Rover  

The Opportunity rover, like its twin Spirit, was designed for an original mission of just three months. When engineers lost contact on June 10 of last year, it had been exploring for fourteen years. And today, mission scientists finally declared an official end to the mission. Here are just a few of Opportunity's many successes during its long Red Planet expedition. Heat Shield Rock Opportunity discovered the first meteorite on Mars, sitting near its own heat shield. While a few mete...

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2019-02-14 02:13:04

NASA's Opportunity Rover is Dead. We Asked Scientists to Write Eulogies For the Robot  

After some 15 prolific years on the Martian surface, NASA's Mars Opportunity rover has gone silent. And after an all out effort to re-establish contact, the space agency says it's given up hopes of ever hearing back from the rover. We talked to the NASA engineers and scientists whose lives have been touched by the Opportunity rover about their experiences and what the craft meant to them. For some researchers, the mission has encompassed their entire career. For others, the spacecraft t...

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2019-02-14 01:02:54

NASA To Speak Today on the Fate of Mars Opportunity Rover  

NASA will hold a briefing at 2pm EST today on the status of its Mars Opportunity Rover, which has been out of communication since June 10, 2018, when dust storms enveloped the planet. Mission scientists have been trying to rouse the rover since dust storms subsided in October, but have been unsuccessful so far. Previous reporting indicated that few options were left for Opportunity. Winter is coming on Mars, and the low temperatures could permanently damage the rover if it can't power its

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2019-02-13 12:40:44

NASA Once Made an Official Ruling on Women and Pantsuits  

In 1970, NASA's Goddard Spaceflight Centre was forced to address a tricky new issue in the realm of women in space: the validity of pants in the workplace.  Women and pants have a strange relationship throughout the 20th century, and further back, too, though for the moment we aren't going to get into Joan of Arc wearing men's armour. Pants — or trousers or slacks — began the last century as men's clothing, but it wasn't long before exceptions started to appear in the form of athl...

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2019-02-12 20:49:20

A Hormone Produced When We Exercise Might Help Fight Alzheimer's  

An exercise-induced hormone linked to a range of benefits might add another to its repertoire: protection against Alzheimer's disease. A new paper, published in Nature Medicine, explains that the hormone irisin, released by our bodies when we exert ourselves, seems to offer protection against the memory loss and brain damage associated with Alzheimer's. In those with the disease, however, irisin levels are depleted. Boosting irisin levels through exercise, then, might be a way to stave ...

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2019-02-12 20:22:04

What's the Buzz? Mosquitoes Can Hear You From 30 Feet Away  

If a tree drops in the forest and no one is around to hear it, does it make a sound? Humans may never know, but mosquitoes might. Until now, it was thought that mosquitoes could only hear a few inches away, but new research shows that they can detect sound from up to 32 feet away. This surprising ability allows Aedes aegypti mosquitos to track down distant mates and even tune in to human speech. The study, published on February 7 in the journal Current Biology, also offers another surpr...

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2019-02-12 17:23:28

We'll Need A Whole New Landing Approach to Put Humans On Mars  

As humans get more ambitious with their plans for exploring Mars, we're going to need to land bigger spacecraft on its surface. Up until now, NASA's robotic missions have used parachutes, inflatable bubbles, and sky cranes, as well as descent rockets. But to land the kind of heavy spaceships that can carry human astronauts to Mars, engineers will need new methods to touch down. At the moment, most spacecraft rely on parachutes to slow down from a whopping Mach 30 or so as they enter the...

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2019-02-12 15:48:57

These Are the 24 Sounds Humans Use to Communicate Without Words  

Ever catch yourself letting out a frustrated sigh, a squeal of delight or maybe a gasp of terror? These off-the-cuff vocalizations are called vocal bursts. And in a new study, researchers from the University of California, Berkeley have mapped out a record number of them. To start things off, the researchers asked 56 people, some professional actors and some not, to react to different emotional scenarios. From these reactions, the team recorded more than 2,000 vocal bursts. Next, they

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2019-02-12 08:49:05

Where Do New Languages Come From?  

In the desert town of Lajamanu, Australia, at the bend of a narrow dirt road, Carmel O'Shannessy worked at a school as a teacher-linguist in the early 2000s. Lajamanu's Indigenous Warlpiri people, who live in the country's Northern Territory, were skilled at drawing sustenance from the landscape's parched red soil, and O'Shannessy soon discovered hidden cultural riches the Warlpiri had stored up. As she got to know the children in the community, O'Shannessy noticed they had a ...

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2019-02-12 06:48:16

Ancient Celts Decapitated Their Enemies and Saved Their Heads, Archaeologists Say  

(Inside Science) -- In a finding that mirrors the fantasy of HBO's "Game of Thrones," French researchers working at the site of a third-century B.C. settlement have discovered evidence that Celtic communities decapitated and preserved human heads. A team of archaeologists unearthed fragments of human skulls that they believe confirm a practice of deliberate decapitation. They concluded that the skulls were either war trophies or the result of a still little understood ritual practice....

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2019-02-12 04:57:14

China and India Are Literally Making Earth Greener  

Since at least the early '80s, the world has been getting greener. Satellite data show plants cover more and more land every year. That's happening even as deforestation increases in the tropics. Scientists have attributed some of the greening to climate change and an effect called CO2 fertilization, where rising atmospheric carbon dioxide levels fuel photosynthesis, the process plants use to make food, and in turn help plants grow. Now researchers have discovered that agriculture - expan

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2019-02-12 04:45:13

NASA Scientist Searched For 'A Couple Hours' Before Spotting Second Greenland Impact Crater  

Last November, scientists' minds were blown by the discovery of a 19-mile-wide crater under Greenland. The crater had been hiding in plain sight just 150 miles from a major air force base. Scientists flying airborne surveys with NASA's Operation IceBridge found it serendipitously while testing their equipment while en route to collect Arctic data. And, on Monday, the same group announced they've found another potential impact crater that's even larger, and it sits just over 100 miles...

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2019-02-12 02:29:14

These Researchers Think We Can Retrain Our Brains to Tame Chronic Pain  

Just one incident can make the brain overreact to future experiences. Researchers believe the solution is to reframe and retrain.

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2019-02-11 20:58:09

The Space Station's New 3-D Printer Recycles Old Plastic Into Custom Tools  

Last week, Northrop Grumman's Cygnus spacecraft departed the International Space Station, having delivered a batch of new experiments and cargo. Among them was the Refabricator, a new machine that will not only make objects on demand things for the astronauts, it will recycle them too. While 3-D printers are becoming commonplace, nowhere are their benefits more obvious than in the confines of space. Cargo resupply missions to the ISS are routine, but as human spaceflight pushes farth...

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2019-02-11 16:48:49

Astronomers Might Soon Have Many More Glimpses Into the Early Universe  

For decades, scientists have been on the hunt for brilliant galaxies in the distant universe. These quasars were first noticed for being spectacularly bright - some of the most energetic objects ever discovered. But astronomers think many of them - in fact, the vast majority from the early universe - may be in hiding, camouflaged behind much closer galaxies. Because of their brightness, astronomers want to use quasars to probe the era of reionization. This is a time less than a b...

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2019-02-11 13:08:53

Scientists Finally Confirm A Big Theory About Solar System Formation  

Planets, stars, and black holes all grow by consuming material from a spinning disk. While these disks may differ in size, they're all mostly dependent on the mighty force of gravity, which keeps them spinning around the central mass. Gravity lets small clumps grow into bigger clumps. But it's not enough to pull the whole disk into the middle in one giant clump, because angular momentum is pulling those clumps away from the center as they spin. That's a good thing, because it means that t

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2019-02-11 02:46:37

How Scientists Actually Dismantle a Nuclear Bomb  

(Inside Science) -- There are enough nuclear weapons in the world to cause atomic Armageddon many times over, according to scientists, who estimate that no country could fire more than 100 nuclear warheads without wreaking such devastation that their own citizens back home would be killed. Most nuclear nations recognized by the Treaty on the Non-Proliferation of Nuclear Weapons -- namely, France, Russia, the United Kingdom and the United States -- have set about reducing their arsenals. C

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2019-02-08 14:36:05

Dung Beetles Navigate by Polarized Moonlight  

Like humans throughout history, it turns out that dung beetles are celestial navigators. Steering is important to dung beetles. When a choice load drops, they want to grab their ball and roll away in as straight a line as they can manage. In this sense, they're not so much navigating (which implies a destination), but they are orienting themselves by the skies. Dung beetles who work during the day can use the sun. But nocturnal dung beetles rely on moonlight - and that waxes and wanes...

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2019-02-08 13:40:38

With Ancient Human DNA, Africa's Deep History Is Coming to Light  

In 2010, extraordinary circumstances allowed geneticists to reconstruct the first full genome of an ancient human: the DNA came from a hairball, frozen 4,000 years in Greenland soil. Since then, methods have improved so much in cost and efficiency that individual papers now report genomic data from hundreds of dead people (here, here, here). Ancient DNA (aDNA) has now been published from well over 2,000 human ancestors, stretching as far back as 430,000 years ago. But around 70 percent of

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2019-02-08 06:40:32

The U.S. climate became afflicted by split personality disorder in 2018  

Meanwhile, the Earth as a whole continues to ride the up-escalator of human-caused global warming Two U.S. agencies have reported on how Earth's climate fared in 2018. For the most part, the news wasn't all that surprising: The long-term trend of human-caused global warming showed no significant signs of relenting. But I was surprised by one finding: The United States experienced something of a split climatic personality last year. More about that in a minute. First, though, NASA an...

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2019-02-08 02:38:27

Well, Hello There! Fish Recognize Themselves in the Mirror  

When it comes to intelligence, fish get a bad rap. They've been plagued with the five-second memory stereotype, and thanks to Dory, are thought to "just keep swimming." But a new study suggests that they might be smarter than we think. Research published today in the journal PLOS Biology shows that fish can recognize and respond to themselves in the mirror. When met with their own reflections, a species of fish called the cleaner wrasse identified and attempted to remove marks on th...

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2019-02-07 19:28:39

Not Only Can Honeybees Count, They Can Also Do Math  

Honey bees are a great study system to learn about the animal kingdom. They dance (albeit sloppily), they make jelly that turns their larvae into queens, they have crazy tongues … I could go on. Now, researchers have found, honeybees can add. In a paper out today in Science Advances, a team led by Adrian Dyer at RMIT University in Melbourne put the honey-makers' arithmetic skills to the test. Instead of written numbers and symbols, they used colors to communicate with the bees. Blue f...

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2019-02-07 18:17:50

Researchers Find Further Evidence That Schizophrenia is Connected to Our Guts  

More than 21 million people worldwide suffer from schizophrenia, a profound mental illness that interrupts thinking, language and perception. Quite a few schizophrenic people experience delusions and hear voices. Many of the disease's symptoms stem from faulty communication between brain cells. And, for decades, scientists have searched for a cure in the brain. Now researchers say they've discovered that the way to heal schizophrenia might be through the gut. There's an ecosystem of bac...

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2019-02-07 12:54:59

NASA Honors Fallen Astronauts with Day of Remembrance  

Every year, NASA recognizes astronauts who lost their lives in the pursuit of spaceflight with an official Day of Remembrance. This year, it's celebrated Feb. 7. And NASA Administrator Jim Bridenstine will lay a wreath at the Tomb of the Unknown Soldier in Arlington National Cemetery. Another wreath-laying ceremony will also happen at Kennedy Space Center's Space Mirror Memorial. Both ceremonies will also include observances for NASA's lost explorers. The three great disasters in NAS...

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2019-02-07 11:44:14

The Lost World of the Maya is Finally Emerging From the Jungle  

From massive fortresses to sprawling suburbs, a bold new vision of the vanished Maya civilization takes shape.

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2019-02-07 07:53:29

Bone Cancer In 240 Million-Year-Old Proto-Turtle Pappochelys  

While many people think of cancer as a modern plague, researchers continue to find examples of tumors in animals much older than our own species. Discovery of bone cancer in a very early member of the turtle lineage, which lived 240 million years ago, reveals new information about the disease and just how long it's been a scourge to living things. The aggressive osteosarcoma was found in the femur of Pappochelys rosinae, a roughly 240 million-year-old reptile. Though you might mistak...

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2019-02-07 03:07:53

Researchers Think They've Identified the Brain Pattern that Signals Consciousness  

Imagine lying in a hospital bed, conscious, but unable to convey that to the world around you. For sufferers of strokes, traumatic brain injuries or the ever-terrifying locked-in syndrome, it's not just nightmare fuel — it's reality for some patients. What's potentially more frightening is that neuroscience hasn't landed on a way to truly test for consciousness. That's not for a lack of trying. But a new paper published in Science Advances could help pave the way for spotting c...

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2019-02-07 02:03:47

Why Natural Selection Means We'll Never Be Happy  

We didn't evolve to be happy all the time.

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2019-02-06 19:26:34

Silent Neurons: The Dark Matter of the Brain?  

Now here's a paper with an interesting title: The dark matter of the brain Author Saak V. Ovsepian argues that "the great majority of nerve cells in the intact brain do not fire action potentials, i.e., are permanently silent." This is a remarkable claim, and it raises the question of what these silent neurons are doing. However, I didn't find myself convinced of the existence of this 'dark matter'. Ovsepian points out that numerous studies have found that only a minority of the neur...

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2019-02-06 18:26:43

With ALMA, Astronomers Find A Bounty of Organic Molecules Near a Young Star  

One of the fundamental questions in looking for life in the universe is figuring out where the materials necessary for making life are likely to exist. These complex organic molecules are, somewhat surprisingly, found all over: in giant dust clouds in space, and on lonely comets in our own solar system. The question for astronomers is figuring out how they make their way onto planets like Earth. Astronomers looking to learn about the solar system's early history often turn to comets, as ...

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2019-02-06 17:28:58

Women's Brains Are Younger Than Men's of the Same Age, Study Finds  

Scientists have found an odd difference between the brains of men and women. Women's brains appear younger than their age, but men's brains appear to be older. When looking at the brains of both sexes of the same chronological age, women's brains were 3.8 years younger and men's brains were 2.4 years older on average. The finding, published online in the Proceedings of the National Academies of Science, may explain why older women tend to outperform their male peers on reason, memory...

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2019-02-06 10:19:09

Deaf Infants Already Process Information Differently  

Babies, many people agree, are pretty interesting. Not because of their personalities (although, to be sure, some babies are great wits), but because of everything going on in their little baby brains. The complex and intricate processing power of an adult brain is literally taking shape within a newborn's head, as experiences and sensory input forge new neural connections. And if a baby is missing one of those senses — say, hearing — it's reasonable to think her brain would look and...

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2019-02-06 10:07:14

Marijuana May Not Hurt Sperm Counts Finds A Surprising Study  

In a surprise find, researchers discover smoking pot may not hinder sperm counts. According to a new study, men who had smoked marijuana at some point in their lives had higher sperm counts than men who had never smoked weed. The finding contrasts previous research showing regular cannabis use lowers sperm numbers. "These unexpected findings from our study highlight that we know too little about the reproductive health effects of cannabis and, in fact, of the health effects in general t...

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2019-02-06 08:49:25

Melting Ice Sheets Will Really Mess With a Fundamental Ocean Current  

Researchers have updated their predictions for what melting ice sheets will do to the planet within the next century. By 2100, the shrinking Antarctic and Greenland ice sheets will raise sea levels by nearly 10 inches. The influx of water will disrupt an ocean current vital to our weather, with dangerous consequences. "We're dealing with a very delicately balanced system," said Nicholas Golledge, a climate scientist at the Victoria University of Wellington in New Zealand, who led t...

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2019-02-06 07:19:41

The First CubeSats Ever to Visit Mars Have Gone Silent  

When NASA's InSight mission reached Mars last year, it wasn't alone. It was accompanied by two tiny satellites called CubeSats, or in this case, MarCO, for Mars Cube One. They were the first CubeSats ever to visit the Red Planet. The pair, nicknamed EVE and WALL-E, after Pixar's fictional robots, relayed information from InSight's descent. But their real mission was simply to show off their abilities so far from home and prove that such small missions - the total MarCO program only c...

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2019-02-06 03:53:02

Charon's Icy Surface Erupted From an Underground Ocean  

While New Horizons is exploring new targets, researchers are still working on the mountains of data it returned in 2015 from its visit to Pluto and its moon Charon. Charon is Pluto's largest companion, and like Pluto, it has a complicated, icy surface dotted with mountains and canyons. Large parts of Charon's surface appear to have been resurfaced in the past, leading to theories of an underground ocean that could have erupted long ago. New Horizons' best views of Charon were of its sid...

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2019-02-05 19:51:38

Astronomers Map a Black Hole Using 'Echoes' of Light  

Black holes pepper our universe, but like their name implies, most are invisible — until something happens to change that. That something is often material flowing into the black hole. And in March 2018, one such previously invisible black hole flared to life when a flood of matter fell inward, allowing astronomers to spot and track the event, ultimately mapping out the region close to a black hole in finer detail than ever before. That work, published January 9 in Nature, was le...

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2019-02-05 07:01:11

New Material Strengthens Like Muscles, Could Lead to Smarter Prosthetics  

(Inside Science) -- Researchers from Japan have come up with a way to encourage materials to grow stronger over time, like the muscles in our body. The new technique could allow engineers to design adaptable and healable materials for a wide range of applications. When we lift weights in the gym, the mechanical stress causes our muscle fibers to rip and tear, but this damaging action actually allows the fibers to regrow stronger afterwards. In contrast, nonliving materials such as rubber

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2019-02-05 06:18:12

As Earth warms from human activities, brutal cold waves are becoming less severe, not more so  

As brutal cold spilled out of the Arctic and enveloped much of the U.S. Upper Midwest and Great Lakes in late January, news stories tied the event to global warming. Here's a sampling of headlines: "Brace for the Polar Vortex; It May Be Visiting More Often" (NY Times) "The Polar Vortex And How It's Related To Global Warming (Forbes) "Polar Vortex Linked to Climate Change (WGBH) An increasing but still contested body of science suggests that rapid and intense warming in the Ar...

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2019-02-05 01:35:48

Five Lessons From Seven Years of Research Into Buttons  

All day every day, throughout the United States, people push buttons - on coffee makers, TV remote controls and even social media posts they "like." For more than seven years, I've been trying to understand why, looking into where buttons came from, why people love them - and why people loathe them. As I researched my recent book, "Power Button: A History of Pleasure, Panic, and the Politics of Pushing," about the origins of American push-button society, five main themes sto...

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2019-02-04 15:50:08

Henrietta Leavitt, the Woman Who Gave Us a Ruler to Measure the Universe  

Gazing up at the sky, it's hard not to imagine the sun, moon, stars, and planets as part of an inverted bowl over our heads, even if we know that's an antiquated way of viewing the heavens. These days, we understand it's the Earth that's spinning, spinning daily like a ballerina while also circling the sun on its yearly journey. But the bowl imagery was and remains a reasonable way of envisioning how the skies appear to revolve around us, and when certain stars appear or disappear with t...

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2019-02-04 12:36:24

This Steam-Powered Robot Could Someday Hop Between Asteroids  

Thanks to a mashup of science and industry, researchers have developed a prototype spacecraft that can mine water from an asteroid, use that water to generate steam, then use that steam as fuel to hop across the surface of an asteroid — or even jump to an entirely different world altogether. The prototype spacecraft — named The World Is Not Enough (WINE) — was largely developed by Honeybee Robotics in Pasadena, California, with plenty of help from planetary scientist Philip Met...

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2019-02-04 04:59:32

Climate Change Will Begin Changing the Color of the Ocean  

The ocean is rich in diverse shades of blue and green. Now researchers find climate change will alter the color of the oceans by the end of the 21st century. The changes won't be dramatic, in fact, they likely won't be visible to the naked eye, but it suggests that the hue of the ocean could be an important marker for scientists watching to see how climate change will affect our seas. "Ocean color will give us an earlier signal of climate change effects on the marine ecosystem than ot...

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2019-02-04 03:17:58

Galactic Twist: The Warped Shape of Our Milky Way's Disk  

The shape of the Milky Way, usually pictured as a flat spiral, may actually be more like a warped and twisted disk. That's according to a new study of 1,339 stars whose distances could be measured with great accuracy. The resulting map reveals a tipped, uneven disk of material different from our standard picture. Mapping Pulsating Stars The 1,339 stars are all Cepheid variables, a type of pulsating star whose intrinsic brightness depends on how long it takes to vary from bright to dim a...

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2019-02-04 01:14:03

How Emergent is the Brain?  

A new paper offers a broad challenge to a certain kind of 'grand theory' about the brain. According to the authors, Federico E. Turkheimer and colleagues, it is problematic to build models of brain function that rely on 'strong emergence'. Two popular theories, the Free Energy Principle aka Bayesian Brain and the Integrated Information Theory model, are singled out as examples of strong emergence-based work. Emergence refers to the idea that a system can exhibit behavior or propert

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2019-02-02 13:40:33

Iconic NASA Missions That Improved With Age  

NASA is often viewed as the epitome of big ideas and extreme planning. But sometimes even they go above and beyond, either with incredible improvised fixes, or missions that survived the test of time and then some. Hubble Got Glasses The greatest space telescope astronomers have was almost a giant flop. When the telescope launched in 1991, the pictures it sent back were muddled and far below the predicted quality. It turned out a mirror had been ground to the wrong specifications, leav

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2019-02-02 03:42:01

Eating Breakfast Might Not Matter When It Comes to Weight Loss  

There are two kinds of people in this world: those who eat breakfast and those who skip it. Maybe that's exaggerating things a little, but the debate over whether or not adults should eat The Most Important Meal of the Day, especially for weight loss, can be polarizing — and not just for the average person. Researchers, too, have been arguing this point for years. Now, a new literature review says there's a possibility that eating breakfast might not help us shed pounds. To Eat...

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2019-02-01 21:17:27

Chinese Rover Wakes Up, Does Science, Goes Back to Sleep  

The Chinese Chang'e-4 lunar mission is returning data again after a scheduled two-week rest period. It's rover, Yutu-2, woke up on January 29, but the Chang'e-4 lander slept in an extra day. The rest mode was necessary due to the frigid nighttime temperatures on the lunar far side, which plunged as low as -310 degrees Fahrenheit. The Chang'e-4 mission is the first to explore the far side of the moon, and the cold temperatures are part of the discovery process. Chang'e-4 Disagrees with Ap

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2019-02-01 18:38:39

Hubble Accidentally Discovers An Ancient, Nearby Dwarf Galaxy  

The Hubble Space Telescope has discovered a small and strangely isolated dwarf galaxy just 30 million light-years away from our own Milky Way. And astronomers say the discovery was completely by accident. Luigi Bedin, of the Astronomical Observatory of Padua, and his colleagues were using Hubble to study a globular star cluster called NGC 6752. Globular clusters are tightly packed crowds of ancient stars. And when they looked at the images Hubble sent back, they noticed a small galaxy hid

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2019-02-01 07:42:32

Major Study Rewrites the Driving Source of Atlantic Ocean Circulation  

Massive volumes of water circulate throughout the Atlantic Ocean and serve as the central drivers of Earth's climate. Now researchers have discovered that the heart of this circulation is not where they suspected. "The general understanding has been [that it's] in the Labrador Sea, which sits between the Canadian coast and the west side of Greenland," said Susan Lozier, a physical oceanographer at Duke University in Durham, North Carolina, who led the new research. "What we foun...

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2019-02-01 04:37:32

NASA's Mars Curiosity Rover Finds Clues About Mysterious Mount Sharp  

A team of researchers managed to repurpose a movement-detecting device that helps NASA's Curiosity rover navigate and use it to measure variations in the Red Planet's gravitational field. In the process, the scientists discovered that the rocks beneath the rover are more porous than previously suspected. This offers clues into the mysterious formation Mount Sharp, a strange hill the rover has been exploring in the center of Gale Crater. "This study is a little bit of the fi...

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2019-02-01 03:51:44

New Study Says that Dark Energy Could be Growing in Strength  

Dark Energy Dark energy, the mysterious and hypothetical force that scientists think is causing the expansion of the universe to accelerate, may actually be growing over time, according to one new study. About 20 years ago, scientists discovered dark energy by measuring the light coming from exploding stars, known as supernovas. Dark energy is thought to permeate all of space and, by continuing to study the light coming from supernovas, scientists have observed the effects of dark energy a

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2019-01-31 20:02:21

New Study Says We Can Prime Our Brains to Learn While We Sleep  

"Learn a new language while you sleep!" may sound like the start of a bad 3 a.m. infomercial, but new research has found some evidence for sleep learning. Of course, listening to French on tape while you sleep is unlikely to instantly give you the ability to order a vanilla latte and an omelet in a foreign tongue the next morning. But it may enhance your ability to learn new vocabulary, according to a study published in Current Biology. Researchers have long known that sleeping play...

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2019-01-31 15:20:39

Until Relatively Recently, Giant Pandas Ate Much More Than Bamboo  

Pandas are picky eaters. The conservation icons live off a nearly exclusive diet of bamboo. Now, researchers have shown that ancient pandas once had a much broader palette and lived in a wider region. The discovery overturns a long-held belief that while pandas descended from meat-eating animals, they have been dining on bamboo for millions of years. "It has been widely accepted that giant pandas exclusively feed [on] bamboo [since] a long time ago -- 2 millions years," said Fuwen We...

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2019-01-31 09:42:30

Scientists Just Cleared Up A Mystery About Auroras  

Auroras: They're colorful, mesmerizing and, most of all, mysterious. Scientists understand the basic physics behind how charged particles interact with our atmosphere to produce these dancing lights. But the larger mechanics of when, why and how auroras appear still isn't very well understood. One particular mystery is that the northern and southern lights don't always match up like researchers would expect. For years, scientists assumed that aurora borealis and aurora australis would m...

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2019-01-31 08:54:32

What Happens When You Go Beyond the Final Frontier?  

It was a New Year's Eve like no other. First of all, the big celebration started a half hour after midnight. Children were waving mini-flags, surrounded by throngs of giddy planetary scientists. And four billion miles away, one billion miles past Pluto, the New Horizons spacecraft was flying past an enigmatic object called 2014 MU69--better known by its nickname, Ultima Thule. When radio signals from New Horizons finally reached Earth the next morning, they revealed that the mission was a

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2019-01-31 07:46:55

Beyond Good or Bad: Searching For a Diet That Balances The Many Kinds of Fat  

Public health guidelines, such as the Dietary Guidelines for Americans, have long emphasized reducing dietary fat intake, but nutritionists and other health scientists now have more recent evidence that not all fats have adverse effects. Dietary fats differ with regard to their effects on health and risk for chronic diseases, particularly in regard to effects on risk for heart disease. Indeed, some nutrition experts now believe that certain types of dietary fat may even reduce cardiovascu

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2019-01-31 06:35:38

One Time America Thought About Nuking the Moon, and a Few Times Humans Smashed Things Into It Anyway  

The 1950s were a bizarre period in American history. An economic boom brought joy to a generation home from war, and also harbored a strange level of distrust, of enemies both internal and external, in a nation not quite at war, but not quite at peace either. Technology was advancing in leaps and bounds, and the Space Race between the United States and the Soviet Union was underway. To America's dismay, the Soviets were winning - at least at first. But before humans set foot on th...

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2019-01-31 06:23:30

Dinosaur Relative Antarctanax Lived In Antarctica After Biggest Mass Extinction  

A dinosaur relative about the size of an iguana, which lived at the bottom of the world 250 million years ago, is throwing paleontologists for a loop. Antarctanax shackletoni, named for explorer Ernest Shackleton, hints at unexpected biodiversity on the now-frozen continent of Antarctica. About 252 million years ago, the greatest mass extinction known walloped life on Earth. An estimated 90 percent of all living things perished. In the wake of this event, known as the end-Permian or Gre

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2019-01-31 02:28:25

Starfish Are Dying Out Fast Along America's Pacific Coast  

Sea stars, also commonly called starfish, are among the most abundant animals along the U.S. West Coast. But now scientists say an epidemic spurred by warming ocean waters is decimating sunflower sea stars, a critical predator in kelp forests. The sea stars' collapse could wipe out the shallow water ecosystems that provide a home for seals, sea otters and commercially important fish. "The epidemic was catastrophic and widespread," said Drew Harvell, a marine ecologist at Cornell Uni...

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2019-01-30 21:50:16

Scientists Gave This Robot Arm a 'Self Image' and Watched it Learn  

In The Matrix, Morpheus tells Neo that their digital appearance is based on their "residual self-image." That is, the characters look how they imagine themselves to look, based on their own mental models of themselves. In the real world, scientists have been trying to teach robots that trick as well. That's because, unlike the warring machines of the matrix, a real-life robot with an accurate self-image might benefit humanity. It'd allow for faster programming and more accurate sel...

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2019-01-30 17:05:05

NASA Makes Last Ditch Effort to Contact Mars Opportunity Rover  

Opportunity's Last Hope Last Martian summer, a dust storm blocked out the sun and grew until it enveloped the entire Red Planet. That left the Opportunity rover deprived of solar power and NASA lost contact with the robot. Now, after six months without a response, NASA is making a new, and potentially their last, effort to restore contact with the rover. The last contact that Opportunity had with Earth was on June 10, 2018, in the midst of the global dust storm. NASA's Jet Propulsion ...

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2019-01-30 10:25:42

How Scientists Are Using Ultrasound To Control Genes, Cells and More  

Most parents' first glimpse of their children comes in ultrasound images taken months before birth. But ultrasound could soon offer much more than prenatal portraits. In the past few years, researchers have opened a new door for ultrasound, developing techniques that harness the familiar, safe and noninvasive sound waves to control genes, alter brain function and deliver drugs to targets with millimeter precision. The advance of what's being termed sonogenetics offers a new twist ...

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2019-01-30 08:10:41

SNAPSHOT: Fruit Fly Brain Captured With New 3-D Imaging Tech  

The brain of a fruit fly is captured here using a new, large-scale 3-D imaging technique developed by a multi-institutional group of researchers led by MIT and Harvard University. The method is shockingly fast, and millions of synapses can be analyzed in just a few days. That's much faster than previously possible. The technique makes use of expanding brain tissue and what's called lattice light-sheet microscopy. Here, the fruit fly brain is about the size of a poppy seed and contai...

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2019-01-30 07:47:58

Denisova Cave: New Fossils And Dates For Human Presence  

Nestled in the foothills of southern Siberia's Altai Mountains, Denisova Cave has yielded numerous artifacts, as well as fossils of many animals and at least two hominins: Neanderthals and Denisovans. The cave is the only place in the world known to have remains of the Denisovans, who, like Neanderthals, were our close evolutionary cousins. The site is one of the most significant for understanding human evolution, but study of it has been hampered by difficulty dating the finds. Today, ...

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2019-01-30 03:28:57

A New Look at Neurogenesis in Humans  

What, if anything, is the function of adult neurogenesis in humans? Does neurogenesis even exist in our adult brains, or does it shut down during childhood? The debate over human neurogenesis has been one of the most prominent disputes in 21st century neuroscience. Just last year, two opposing papers appeared in leading journals, one claiming firm evidence of ongoing neurogenesis in the adult human dentate gyrus, while the other study came to the opposite conclusion. The fact that adult neuro

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2019-01-30 03:12:26

What Makes A Morning Person? Scientists Identify New Genetics Behind Early Risers  

Up and at 'em! Scientists have discovered more than 300 hundred places in the genome that influence our sleeping habits. The analysis reveals that there's an association between our waking and sleeping habits and mental health. "Our work indicates that part of the reason why some people are up with the lark while others are night owls is because of differences in both the way our brains react to external light signals and the normal functioning of our internal clocks," Samuel Jones...

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2019-01-29 16:33:29

Two Chinese Private Space Companies Will Launch into Orbit This Year  

Chinese Space Launch Two Chinese private space companies are on the verge of attempting their first orbital launches, according to the space industry newssite SpaceNews. Companies OneSpace and iSpace aim to successfully complete orbital launches within the first half of 2019. The success of these launches would solidify the progress made by China's growing private space sector. Beijing-based OneSpace plans to launch their 62-foot-tall (19 meters) OS-M rocket as soon as late March. The ...

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2019-01-29 11:06:55

Human-caused global warming already has doomed a large fraction of Earth's glaciers  

But thereʼs a silver lining to this dark cloud: You can still make a personal difference in preserving glacial ice. Even if we somehow stopped climate change dead in its tracks right now, recent research shows that more than a third of the world's 200,000 glaciers would melt anyway. That's because glacial ice takes decades to fully respond to the human-caused global warming that has already occurred. And as the inevitable thawing continues, meltwater flowing into the oceans will cont...

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2019-01-29 08:11:48

Why Climate Change is Bringing the Polar Vortex South  

A record-breaking cold wave is sending literal shivers down the spines of millions of Americans. Temperatures across the upper Midwest are forecast to fall an astonishing 50 degrees Fahrenheit (28 degrees Celsius) below normal this week - as low as 35 degrees below zero. Pile a gusty wind on top, and the air will feel like -60 F. This cold is nothing to sneeze at. The National Weather Service is warning of brutal, life-threatening conditions. Frostbite will strike fast on any exposed sk...

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2019-01-29 08:02:02

This Israeli Company Will Soon Launch the World's First Private Moon Lander  

To the Moon SpaceIL, a privately funded non-profit organization from Israel and the government-owned corporation Israel Aerospace Industries (IAI) will soon launch for the lunar surface with a digital time capsule on board. If successful, it will mark not only the first Israeli craft to land on the moon, but the first-ever private moon lander, as well. The non-profit organization announced in a statement in December of 2018 that their spacecraft, manufactured by IAI and named Beresheet ...

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2019-01-29 02:20:24

A Rock Apollo 14 Astronauts Found on the Moon Actually Came From Earth  

Earthly Moon Rocks In 1971, astronauts aboard the Apollo 14 mission collected a moon rock that scientists have now found likely originated on Earth. During a new investigation, researchers found that the rock, officially named 14321, contains traces of minerals and has a chemical makeup that are both common to Earth and extremely strange for the moon. The research team thinks that, most likely, a rock that formed on Earth four billion years ago was launched to the moon's surface by an aste...

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2019-01-29 01:58:44

Hubble's Most-Used Camera is Back in Action After a Strange Malfunction  

Hubble's Camera Troubles The Hubble Space Telescope's Wide Field Camera 3 is once again operational after issues earlier this month caused the camera to suddenly stop observations. On Jan. 8, the telescope's camera abruptly stopped working when it detected voltage levels outside of the expected range. That set engineers searching for what caused the problem. After investigating the issue, the team ended up finding that the voltage levels inside the camera were actually normal. Instea...

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2019-01-28 21:37:07

Why Did Darker and Lighter Human Skin Colors Evolve?  

Human skin color reflects an evolutionary balancing act tens of thousands of years in the making. There's a convincing explanation for why human skin tone varies as a global gradient, with the darkest populations around the equator and the lightest ones near the poles. Put simply, dark complexion is advantageous in sunnier places, whereas fair skin fairs better in regions with less sun. That may seem obvious, considering the suffering that ensues when pale folks visit the beach. But act...

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2019-01-28 16:44:27

How a Massive Tree-Planting Campaign Eased Stifling Summer Heat in New York City  

Many cities, in recent years, have initiated tree planting campaigns to offset carbon dioxide emissions and improve urban microclimates. In 2007, New York City launched MillionTrees NYC, a program designed to plant 1 million new trees along streets, in parks and on private and public properties by 2017. They hit their goal two years ahead of time. These programs are popular for a reason: Not only do trees improve the city's appearance, but they also mitigate the urban heat island eff...

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2019-01-28 15:05:20

SNAPSHOT: This Ion-Smasher Simulates the Big Bang's Earliest Moments  

The STAR detector is reflected through a crystal sphere in this finalist photo by Joe Caggiano, from the Brookhaven National Laboratory's 2018 Photowalk competition. STAR stands for Solenoidal Tracker at RHIC, which in turn stands for Relativistic Heavy Ion Collider — a device so complex it needs an acronym within an acronym. STAR is actually made up of a number of detectors which, combined, are as large as a house, weighing in at 1,200 tons. It's one of just two operational acce...

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2019-01-28 13:53:41

Does Spaceflight Impair Astronaut's Ability to Fight Cancer and Viruses?  

Astronaut Health Organizations all around the world are working to send humans to Mars, from NASA and other government agencies to commercial operations like Boeing and SpaceX. But the trip to the Red Planet won't be a short one — NASA's round-trip Mars mission, which is planned for the 2030s, could take up to three years of space travel. Humans haven't spent even close to that amount of consecutive time in space. Studies have already shown how spaceflight could affect everything from a...

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2019-01-28 10:15:54

Latest Image of Ultima Thule Reveals New Details  

Just after midnight on New Year's Day, NASA's New Horizon's spacecraft flew past the Kuiper Belt object, 2014 MU69, more commonly known as Ultima Thule. Now, the best image of the object to-date has reached Earth, revealing previously unseen details on the peanut-shaped space rock. This latest image was taken with the wide-angle Multicolor Visible Imaging Camera (MVIC) component of the spacecraft's Ralph instrument. The camera snapped the shot when the spacecraft was just 4,200 m...

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2019-01-25 17:40:01

Maybe You Really Can Use Black Holes to Travel the Universe  

One of the most cherished science fiction scenarios is using a black hole as a portal to another dimension or time or universe. That fantasy may be closer to reality than previously imagined. Black holes are perhaps the most mysterious objects in the universe. They are the consequence of gravity crushing a dying star without limit, leading to the formation of a true singularity - which happens when an entire star gets compressed down to a single point yielding an object with infinite de...

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2019-01-25 13:19:45

To Help Computers Detect Who's Talking, These Scientists Figured Out How Humans Do It  

(Inside Science) -- If your phone rings and you answer it without looking at the caller ID, it's quite possible that before the person from the other end finishes saying "hello," you would already know that it was your mother. You could also tell within a second whether she was happy, sad, angry or concerned. Humans can naturally recognize and identify other humans by their voices. A new study published in The Journal of the Acoustical Society of America explored how exactly humans ar...

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2019-01-25 12:27:35

New Genome Sheds Light on the Axolotl, a Master of Regeneration  

Wouldn't it be sweet if you could regrow your arm after it's been chopped off? Such is the life of a salamander, those adorable slimy four-legged amphibians that can regenerate limbs or even their spinal cords. But salamanders are interesting for more reasons than their mad regeneration skillz. Especially when you consider the axolotl, a salamander that's widely used as a model organism in biology. It's got a ginormous genome that's 32 billion base pairs long, which means every ...

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2019-01-25 02:15:03

Sleep Deprivation Causes Alzheimer's Protein to Build up in the Brain  

Our brains, like everything else about our bodies, change as we age. But the changes that happen to the Alzheimer's brain are not part of the normal aging process. Researchers have struggled to understand the underlying mechanisms that lead some people to develop Alzheimer's. Now a new study published in Science has linked poor sleep to an abnormal build-up of an Alzheimer's-promoting protein in the brain. The telltale pathological signs of Alzheimer's disease are high levels of be...

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2019-01-24 20:58:10

Genetic Mutations In Our Bodies Might Be Less Random Than We Thought, Scientists Say  

When it comes to evolution in humans, there are two main things making it happen, at least on the genetic level: The recombination of genes that happens when our parents' chromosomes pair up and the random mutations that inevitably result. A new high-resolution map of the human genome is providing scientists with their most detailed look yet at the dual roles those processes play in creating each person's unique genome. It's also revealing that mutations in some places are more likely tha

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2019-01-24 19:22:12

Life on Earth May Have Been Made Possible by an Ancient, Violent Collision  

Life on Earth Did the violent, cosmic collision that created the moon make life on Earth possible? One new study suggests so. There are a number of theories for how life originated on Earth, many of which try to explain how our planet got the ingredients for life: elements like carbon and nitrogen. Previously, scientists have suggested that meteorites delivered life-giving elements to Earth. While the isotopic signatures of these elements on Earth match up with these objects, th...

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2019-01-24 19:10:07

Astronaut to Fly on Boeing's CST-100 Starliner Replaced Because of Medical Issue  

An Astronaut Replacement An astronaut scheduled to fly later this year aboard Boeing's CST-100 Starliner crewed test flight is being replaced because of a medical issue, NASA announced earlier this week (Jan 22). According to the agency, NASA astronaut Eric Boe has been removed from the crewed test flight and replaced with veteran NASA astronaut Mike Fincke. For now, Boe will assume Fincke's position as assistant to the chief of the astronaut office for commercial crew at the Johnson ...

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2019-01-24 18:45:14

This 'Library of Starlight' Lets Astronomers Peruse the Galaxy  

Imagine going to a library where the books aren't books at all, but detailed information on stars throughout our galaxy. Stars are the building blocks of clusters and galaxies; the information contained in their light provides details on temperature, composition, age, and motion. Now, a unique database called the MaNGA Stellar Library (after the Sloan Digital Sky Survey's Mapping Nearby Galaxies at Apache Point Observatory [MaNGA] project) provides the perfect starting point for astronom...

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2019-01-24 02:03:01

Astrophotographer Caught a Meteor Striking the Moon During the Eclipse  

Sunday night's total lunar eclipse treated Americans to a special show, as Earth's shadow crossed the Full Moon's face. And during the event, something unusual happened. Astroimager Jamie Cooper, from Dustin, England, caught an meteor impact on the moon. Such events were theory only two generations ago, but now are fact and somewhat commonplace to the discerning observer. Today a simple video camera can capture meteorites impacting the moon. Unlike meteorites hitting Earth, these ob...

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2019-01-23 21:06:30

Heart Disease Risk Begins Before Birth. Vitamin C Could Help  

High blood pressure in adulthood may extend all the way back to before birth, according to new research in sheep. Scientists found not getting enough oxygen to tissues during pregnancy led to offspring with high blood pressure as adults. However, giving a high-dose of vitamin C to pregnant ewes seemed to counteract that. The researchers say the results point to the need for proactive prevention strategies rather than reactive treatments. "Treatment should start as early as possible...

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2019-01-23 19:27:35

'Shooting Stars on Demand' Launch in Japan  

Artificial Meteor Showers A rocket blasted off from Japan on Friday, Jan. 18, carrying satellites that will deliver the first-ever artificial meteor shower. The Tokyo-based start-up ALE Co. Ltd has developed a new micro-satellite that will put on quite a show over Hiroshima early next year. Each satellite carries tiny balls with a secret chemical makeup. Once rocketed away from Earth, the satellite will release these balls, which will glow as they whiz through the atmosphere, simulating th

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2019-01-23 18:02:37

A Common Gum Infection Bacteria May Also be Causing Alzheimer's  

In a new study out Wednesday, scientists reveal yet another reason to keep up on dental hygiene. Bacteria that cause a common yet largely preventable gum infection may also play a role in Alzheimer's disease. The discovery also offers hope for a treatment that could slow neurodegeneration. "There were many clues in the [features of Alzheimer's disease] that an infection is at work," said Casey Lynch, an entrepreneur and co-founder of Cortexyme, a biotech company headquartered at t...

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2019-01-23 13:21:59

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