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'Super Earth' Spotted, Might Support Life

GG 667Cc orbits star 22 light years away

(Newser) - A planet in a triple-star system a relatively close 22 light years away is the best candidate yet for supporting life, researchers say. The rocky planet, GJ 667Cc, is around 4.5 times the size of Earth and orbits in the middle of the "Goldilocks zone" where water can... More »

Space Telescope Spots Earth-Sized Worlds

Kepler discoveries are smallest exoplanets yet found

(Newser) - For the first time, scientists have discovered planets roughly the size of ours outside our solar system. Kepler-20e and Kepler-20f are the smallest exoplanets yet found, Discovery reports. Because they're so close to the star they orbit, they don't appear habitable, but the finding is "next major... More »

'Large Regions' of Mars Are Habitable

But no sign of aliens, spaceships: researchers

(Newser) - More fascinating news about the potential for life on Mars . Some 3% of Mars' volume is capable of sustaining life, Australian scientists have found—more than the 1% of Earth that contains living things. Researchers based their findings on a comparison between the two planets' temperature and pressure attributes, AFP... More »

NASA Spots Habitable Earth-Like Planet

Kepler-22b averages 72 degrees and may have oceans

(Newser) - Finally, an Earth-like planet where the weather is nice enough for an occasional visit. Only, it's 600 light-years away. Today NASA announced the existence of Kepler-22b, the first-ever planet discovered in the "habitable zone" of a sun-like star—where temperatures are placid enough to allow for water, ScienceNOW... More »

Small, Heavy, and Shiny— Planetoid Surprises Astronomers

Distant Eris may be more like Mercury than Pluto

(Newser) - It's been six years since distant Eris was discovered, a small planetoid that led to Pluto losing its planetary status. But since it lies three times further from the sun than Pluto, Eris was very difficult to observe and little was known about it—until now. Last year Eris... More »

Probe Unlocks Mercury's Secrets

Messenger data surprising scientists

(Newser) - Mercury is anything but the boring "burnt-out cinder" scientists once believed it was, say researchers analyzing data from NASA's Messenger orbiter. The spacecraft has now spent 88 days—one Mercurian year—circling the planet, and has sent back about 20,000 new pictures that strongly suggest that ice... More »

NASA Snaps First Shots of Mercury From Orbit

Future photos to reveal planet's unseen regions

(Newser) - A NASA spacecraft has captured the first photo of Mercury taken from orbit. The first of yesterday’s 363 images, shown at left, show the planet’s south pole. The gray surface is covered with craters, including a 53-mile-wide one known as Debussy. Other photos from the $464 million Messenger... More »

Kepler Results Boost Chances of Finding Alien Life

For every two suns, an Earth-like planet

(Newser) - Exciting news for alien enthusiasts: The discovery by NASA scientists of a vast trove of Earth-like planets orbiting distant suns boosts our chances of finding extraterrestrial life. Findings from the Kepler telescope revealed that for every two stars in the universe, one has an Earth-like "candidate planet" orbiting it,... More »

New Planet Sought at Edge of Solar System

Planet Tyche explains change in path of comets: researchers

(Newser) - A huge and previously undetected planet lies at the outer edge of the solar system, believe two University of Louisiana astrophysicists. The planet Tyche, a gas giant four times the size of Jupiter, likely lies in the outer Oort cloud—the most remote part of the solar system—and almost... More »

NASA Finds Smallest Planet Outside Our Solar System

But Kepler-10b is too hot for human habitation

(Newser) - The Kepler space telescope has discovered a rocky planet that’s just 1.4 times the size of Earth orbiting a distant star—making it the smallest planet NASA has ever discovered outside of our solar system, and the only rocky one, NASA announced today. The bad news: The planet,... More »

Death of a Moon Created Saturn's Rings

Space murder led to iconic shape: astronomer

(Newser) - How did Saturn get its distinctive rings? Through the destruction of one of its moons, new research suggests. It was “a case of cosmic murder,” reports the Daily Mail : A Colorado astronomer argues that a layer of hydrogen gas drove many moons toward the planet. In the process,... More »

Alien Planet Discovered in Milky Way

HIP 13044B and its star originated in different galaxy

(Newser) - As planets go, HIP 13044B is one hell of a survivor. Astronomers say the planet—the first one originating from another galaxy ever found in the Milky Way—is part of a solar system that once belonged to a dwarf galaxy that was cannibalized by our own. The planet has... More »

New, Life-Sustaining Planet May Not Exist

Gliese 581g found only in minute, possibly incorrect measurements

(Newser) - US-based researchers may have gotten a tad carried away when they announced the discovery of a new, potentially life-sustaining planet a couple weeks back. Yesterday, a team of Switzerland-based astronomers said their own observations of star Gliese 581g didn’t back up the American team at all. “We do... More »

Tsunamis Spotted in Saturn's Rings

Rings may be remnants of smashed icy moon

(Newser) - Mile-high tsunamis of icy particles are endlessly rippling around Saturn's rings, scientists told the American Astronomical Society's Division for Planetary Science meeting this week. Astronomers, using data from NASA's Cassini probe, believe the waves, which move up to 800 feet per day, are caused when gravity from the colossal moon... More »

Scientists Find Planet With Possibility of Sustaining Life

So-called Goldilocks planet is 20 light years away

(Newser) - Astronomers have announced the discovery of a planet with conditions that may be suitable for habitation. NASA reports that a team studying Gliese 581g for over a decade thinks it's in a zone where water could exist on the surface. Steven Vogt, professor of astronomy at UC Santa Cruz, says... More »

'Cannibal Star' Eats Neighbor

Hungry BP Piscium caught in the act

(Newser) - A "cannibal" star in the Pisces constellation appears to have gobbled up its neighbor and belched out a disc of dusty matter. X-Ray images revealed the remains of either a young star or a large planet inside BP Piscium, which has recently entered the expanding "red giant" phase... More »

Chile Quake Shifted Earth's Axis, Shortened Day

Moving masses of rock by several meters affects rotation

(Newser) - The magnitude 8.8 earthquake that hit Chile may have actually shifted the Earth's axis, shortening the length of a day, a NASA scientist says. Moving hundreds of kilometers of rock changes the earth's distribution of mass, and, in turn, changes the planet's rate of rotation. In this case, the... More »

'Ocean of Diamond' May Shimmer on Neptune, Uranus

Molten diamond experiment suggests that liquid space bling abounds

(Newser) - Vast oceans of liquid diamond with icebergs of solid diamond floating on the surface may exist on Uranus and Neptune. Scientists melting diamonds—which requires incredibly high pressure as well as temperatures—were surprised to discover that it behaves much like water in its molten state and believe that could... More »

Astronomers Find Watery Planet

Probably can't support life, but it's the closest find yet

(Newser) - Astronomers have found a planet made mostly of water, coming ever closer to finding something out there that could theoretically support life. This one, dubbed GJ 1214b, probably isn't it—it's way too hot and surrounded by superheated gases. But it's "the most watertight evidence so far for a... More »

Vast Ocean Once Covered Half of Mars

Valley network points to rainy, humid ancient planet

(Newser) - A single huge ocean fed by rivers once covered much of the northern half of Mars, according to a new analysis of the planet's network of valleys. The researchers say their computer analysis—which replaces maps hand-drawn from satellite images in the '90s—shows that Mars was once much rainier... More »

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