S C I E N C E: Star dust may point to human origins
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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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In the growing debate about when people first appeared on this continent, a leading archaeologist said Wednesday he has discovered what could be sooty evidence of human occupation in North America tens of thousands of years earlier than is commonly believed.
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A supernova spotted by the Danish astronomer Tycho Brahe more than four centuries ago that changed the course of human knowledge has just yielded a further discovery - the apparent discovery of the companion star that triggered the great event.
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Jet Propulsion Lab -- Just when astronomers thought they might have dug up the last of our galaxy's "fossils," they've discovered a new one in the galactic equivalent of our own backyard.     Called globular clusters, these ancient bundles of stars date back to the birth of our Milky Way galaxy, 13 or so billion years ago...
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Scientists are chomping at the bit for tomorrow&#39;s Earthly return of a sample capsule from NASA&#39;s Genesis spacecraft, hoping the star stuff it carries will help answer questions on the origins of the solar system and we who live in it.
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The Genesis desert crash has left scientists wondering about the delicate condition of its solar wind collection. The first release of samples to the community has begun, while new tests for oxygen-isotopes may help uncover which particles might have lunar, solar or terrestrial origins.
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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.
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The image of Neanderthals may be in need of a makeover: scientists say at least some of these extinct hominids could have had fair skin and red hair.
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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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The outer reaches of our solar system may have been shaped long ago by a close encounter with another star that tore up both nascent planetary systems like colliding buzz saws, astronomers said 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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New observations of dust around young stars suggests collisions of large asteroid-like objects and fledgling planets are frequent. But that doesn't likely stop the formation of rocky planets like Earth, a process that may well be common, the results suggest.
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In the continuing debate over the origin of the extinct âlittle peopleâ of Indonesia, a team of scientists says it has found evidence that these people were members of a distinct species.
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Astronomers have found what they believe to be several of the earliest star-forming galaxies, in a detailed analysis of Hubble Space Telescope images released earlier this year.
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The Spitzer and Hubble Space Telescopes each have found dusty disks around sun-like stars. Finding such rings of dusty debris around stars the size of the sun is difficult, because they are fainter and harder
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The surface of one of the brightest stars in the night sky is imaged by scientists.
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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. A NASA telescope recently discovered