Comets hold life chemistry clues
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The idea that comets brought the chemical "seeds" for life to the early Earth is given a big boost by new research.
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Saturn's moon Titan is notorious for its shroud of organic haze. Recent experiments suggest that early Earth may have been covered by a similar haze. The discovery could shed light on how life spread around the globe.
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NASA sets a rocket in motion toward a comet, hoping to gain knowledge of the comet's makeup.
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University of Arizona -- University of Arizona scientists have discovered that meteorites, particularly iron meteorites, may have been critical to the evolution of life on Earth.     Their research shows that meteorites easily could have provided more phosphorus than naturally occurs on Earth -- enough phosphorus to give rise to biomolecules which eventually assembled into living, replicating organisms...
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New observations of dust around young stars suggests collisions of large asteroid-like objects and fledgling planets are frequent.
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A bunch of rowdy comets are colliding and kicking up dust around a dead star, according to new observations from NASA's Spitzer Space Telescope. The dead star lies at the center of the much-photographed Helix nebula, a shimmering cloud of gas with an eerie resemblance to a giant eye.
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PARIS - Water vapour and methane are concentrated in the same areas of the Martian atmosphere, a finding that hints at new ways to hunt for life on the planet, scientists say.
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Mount St. Helens&#39; recent eruption may be replaying a scene straight from the geochemical drama that led to life on Earth. Besides ash and lava, most volcanoes
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NASA and university astronomers are eagerly awaiting the launch of a space probe bound to collide with a comet and give researchers a glimpse inside the solar systemâs icy wanderers.
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Nasa scientists have been giving details of a space mission to crash a projectile into a comet, peeling away its outer skin in order to look inside.
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Recent analyses of ESAÃ¢ÂÂs Mars Express data reveal that concentrations of water vapour and methane in the atmosphere of Mars significantly overlap. This result provides important new hints to evaluate the hypothesis of present life on the Red Planet.
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How did the building blocks of life arise on Earth? A new study says a volcanic gas may have been the key.
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Tributes have been paid to astronomer  Fred Whipple who has died. He was the first scientist to describe comets as "dirty snowballs".
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A forest fire has led to a chance discovery of debris from the impact of a meteorite 1.85 billion years ago, more than 450 miles away at Sudbury, Ontario.
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European Space Agency -- One of the ingenious instruments on board Rosetta is designed to Ã¢ÂÂsmellÃ¢ÂÂ the comet for different substances, analysing samples that have been Ã¢ÂÂcookedÃ¢ÂÂ in a set of miniature ovens.     ESAÃ¢ÂÂs Rosetta will be the first space mission ever to land on a comet...
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By ALICIA CHANG  SAN FRANCISCO - Detailed observations from the first comet samples returned to Earth are debunking some of science's long-held beliefs on how the icy, celestial bodies form.
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NASA's Opportunity Mars rover has come across  an interesting object&nbsp;-- perhaps a meteorite sitting out in the open at Meridiani  Planum. Initial data taken by the robot's Mini-Thermal Emission Spectrometer  (Mini-TES) is suggestive that the odd-looking rock is made of  metal.