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Updated: 16 min 8 sec ago

NASA's SDO Reveals How Magnetic Cage on the Sun Stopped Solar Eruption

Fri, 02/23/2018 - 10:19am
A dramatic magnetic power struggle at the Sun's surface lies at the heart of solar eruptions, new research shows.
Categories: Science

Model based on hydrothermal sources evaluate possibility of life on Jupiter's icy moon

Fri, 02/23/2018 - 9:23am
Scientists compare primitive Earth scenario with satellite Europa's conditions; the Jupiterian moon could host microorganisms at the bottom of a huge warm ocean located underneath its frozen crust.
Categories: Science

On second thought, the Moon's water may be widespread and immobile

Fri, 02/23/2018 - 9:23am
A new analysis of data from two lunar missions finds evidence that the Moon's water is widely distributed across the surface and is not confined to a particular region or type of terrain.
Categories: Science

Improved Hubble yardstick gives fresh evidence for new physics in the universe

Thu, 02/22/2018 - 1:20pm
Astronomers have used NASA's Hubble Space Telescope to make the most precise measurements of the expansion rate of the universe since it was first calculated nearly a century ago. Intriguingly, the results are forcing astronomers to consider that they may be seeing evidence of something unexpected at work in the universe.
Categories: Science

Astronomers discover S0-2 star is single and ready for big Einstein test

Thu, 02/22/2018 - 7:36am
A team of astronomers has found that S0-2 does not have a significant other after all, or at least one that is massive enough to get in the way of critical measurements that astronomers need to test Einstein's Theory of General Relativity. Up until now, it was thought that S0-2 may be a binary, a system where two stars circle around each other.
Categories: Science

Amateur astronomer captures rare first light from massive exploding star

Wed, 02/21/2018 - 10:18am
First light from a supernova is hard to capture; no one can predict where and when a star will explode. An amateur astronomer has now captured on film this first light, emitted when the exploding core hits the star's outer layers: shock breakout. Subsequent observations by astronomers using the Lick and Keck observatories helped identify it as a Type IIb supernova that slimmed down from 20 to 5 solar masses before exploding.
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Magnetic field traces gas and dust swirling around supermassive black hole

Wed, 02/21/2018 - 9:29am
Astronomers reveal a new high resolution map of the magnetic field lines in gas and dust swirling around the supermassive black hole at the center of our Galaxy. The team created the map, which is the first of its kind, using the CanariCam infrared camera attached to the Gran Telescopio Canarias sited on the island of La Palma.
Categories: Science

Roadmap to enhance radioresistance for space colonization

Wed, 02/21/2018 - 9:29am
An international team of researchers has published a roadmap toward enhancing human radioresistance for space exploration and colonization.
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Some black holes erase your past

Wed, 02/21/2018 - 6:13am
Physicists insist on determinism: your past and present determine your future uniquely, per Einstein's equations of general relativity. They call this strong cosmic censorship. A mathematician found some types of black holes -- charged, non-rotating objects in an expanding universe -- that allow an observer inside the black hole to travel across a horizon into a place where the past is obliterated and there are an infinite number of possible futures for every initial state.
Categories: Science

NASA's James Webb Space Telescope to reveal secrets of the Red Planet

Tue, 02/20/2018 - 9:47am
Mars rovers and orbiters have found signs that Mars once hosted liquid water on its surface. Much of that water escaped over time. How much water was lost, and how does the water that’s left move from ice to atmosphere to soil? During its first year of operations, NASA’s James Webb Space Telescope will seek answers. Webb also will study mysterious methane plumes that hint at possible geological or even biological activity.
Categories: Science

Laser-ranged satellite measurement now accurately reflects Earth's tidal perturbations

Tue, 02/20/2018 - 9:30am
Tides on Earth have a far-reaching influence, including disturbing satellites' measurements by affecting their motion. The LAser RElativity Satellite (LARES), is the best ever relevant test particle to move in the Earth's gravitational field. In a new study, LARES proves its efficiency for high-precision probing of General Relativity and fundamental physics.
Categories: Science

No relation between a supermassive black hole and its host galaxy!?

Tue, 02/20/2018 - 9:30am
Using ALMA to observe an active galaxy with a strong ionized gas outflow from the galactic center, a team has obtained a result making astronomers even more puzzled -- the team clearly detected CO gas associated with the galactic disk, yet they have also found that the CO gas which settles in the galaxy is not affected by the strong ionized gas outflow launched from the galactic center.
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Astronomers reveal secrets of most distant supernova ever detected

Tue, 02/20/2018 - 7:24am
Astronomers have confirmed the discovery of the most distant supernova ever detected -- a huge cosmic explosion that took place 10.5 billion years ago, or three-quarters the age of the Universe itself.
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'Ultramassive' black holes discovered in far-off galaxies

Tue, 02/20/2018 - 6:32am
Thanks to data collected by NASA’s Chandra X-ray telescope on galaxies up to 3.5 billion light years away from Earth, an international team of astrophysicists was able to detect what is likely to be the most massive black holes ever discovered in the universe. The team’s calculations showed that these “ultramassive” black holes are growing faster than the stars in their respective galaxies.
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The starry sky shows nocturnal animals the way

Mon, 02/19/2018 - 7:39am
Nocturnal animals can use the stars and the Milky Way to find their way during the darkest hours.
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Asteroid 'time capsules' may help explain how life started on Earth

Sat, 02/17/2018 - 3:48pm
In popular culture, asteroids play the role of apocalyptic threat, get blamed for wiping out the dinosaurs -- and offer an extraterrestrial source for mineral mining. But for one researcher, asteroids play an entirely different role: that of time capsules showing what molecules originally existed in our solar system. Having that information gives scientists the starting point they need to reconstruct the complex pathway that got life started on Earth.
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Why we have yet to find extraterrestrial life

Fri, 02/16/2018 - 11:27am
Are we alone in the universe? Few questions have captured the public imagination more than this. Yet to date we know of just one sample of life, that which exists here on Earth.
Categories: Science

Humans will actually react pretty well to news of alien life

Fri, 02/16/2018 - 11:27am
Hollywood has it wrong. Humans would actually react positively to news of alien life -- intelligent or microbial.
Categories: Science

Soft tissue fossil clues could help search for ancient life on Earth and other planets

Fri, 02/16/2018 - 5:49am
Fossils that preserve entire organisms (including both hard and soft body parts) are critical to our understanding of evolution and ancient life on Earth. However, these exceptional deposits are extremely rare. New research suggests that the mineralogy of the surrounding earth is key to conserving soft parts of organisms, and finding more exceptional fossils. The work could potentially support the Mars Rover Curiosity in its sample analysis, and speed up the search for traces of life on other planets.
Categories: Science

Hubble sees Neptune's mysterious shrinking storm

Thu, 02/15/2018 - 10:11am
Three billion miles away on the farthest known major planet in our solar system, an ominous, dark storm -- once big enough to stretch across the Atlantic Ocean from Boston to Portugal -- is shrinking out of existence as seen in pictures of Neptune taken by NASA's Hubble Space Telescope.
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