Ancient Star Dust May Point to Human Origins-Study
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Star dust found deep beneath the Pacific Ocean has led German scientists to speculate that a supernova explosion 3 million years ago might possibly have helped bring about human evolution.
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The Sun may have captured thousands or even millions of asteroids from another planetary system during an encounter more than four billion years ago, astronomers are reporting today.
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Astronomers have found the first signature of complex organic molecules in the dust cloud around a distant star, suggesting that these building blocks of life may be a common feature of planetary systems.
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Two old stars appear to be gearing up for a second generation of planet formation, a phenomenon astronomers say they have never seen before.
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SPACE.com / Insect bite marks in ancient leaf fossils are shedding new light on how nature bounced back after an asteroid impact killed off the dinosaurs and much of life on Earth 65 million years ago.
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By Sandi Doughton, Seattle Times  Dec. 15--University of Washington astronomer Don Brownlee expected surprises from the pinch of comet dust collected by the Stardust spacecraft.   But he didn't foresee such a shake-up.
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US scientists working with images from the Hubble Space Telescope have identified what may turn out to be some of the earliest star-forming galaxies.
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The first stars in the Universe may have been powered by dark matter, according to a new theory.
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German scientists, sifting through dust on the ocean&#39;s floor, have discovered stardust that may have helped initiate human evolution.
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For the first time, scientists have found rings of dust around planet-bearing stars &#151; an important confirmation of theories about how planets form, NASA announced Thursday.
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It may take much longer than scientists have thought for violent turbulence to turn grains of space dust into new planets.
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For the first time, scientists have found rings of dust around planet-bearing stars an important confirmation of theories about how planets form, NASA has announced.
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New observations of dust around young stars suggest collisions of large asteroid-like objects and fledgling planets are frequent. But that doesn&#39;t likely stop the formation
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The observations by NASA&#39;s Spitzer Space Telescope, linking with previous data from European satellites, demonstrated that the dust clouds in these proto-planetary disks did not steadily fade away over a few million years.
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Signs of ancient eruptions indicate a planet geologically active and may suggest presence of simple life forms. By Peter N. Spotts | Staff writer of The Christian Science Monitor.
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Astronomers using a giant telescope say  they have found glimpses of the most distant -- and oldest --  galaxies ever seen, a finding that will help provide clues to  the origins of the universe.
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A study of an ancient human pest - head lice â-uggests that the ancestors of today&#39;s American Indians may have met and fought with pre-humans long extinct elsewhere, scientists said on Tuesday.