Meteorite yields life origin clue
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Hollow spheres found in a primordial meteorite could yield clues to the origin of life on Earth.
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Astronomers suspect the early Earth was a very harsh place. Temperatures were extreme, and the planet was constantly bombarded by cosmic debris. Many scientists believe that life's starting materials, or building blocks, must have been very resilient to have survived this tumultuous environment.
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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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Comment is free: Johnjoe McFadden: The location of a newly discovered planet is good news in the search for extraterrestrials.
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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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Nearly 4 billion-year-old rocks from Greenland could hold the earliest evidence of life on Earth, University of Chicago and Field Museum scientists say.
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A star that exploded about nearly three million years ago left traces of debris    on Earth and might have affected the course of human evolution, a new study    suggests.
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New data showing overlap in patterns of water and methane in Mars' atmosphere may have implications for the idea that life exists there.
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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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Signs of ancient eruptions indicate a planet geologically active and may suggest presence of simple life forms.
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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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Molecular biologists have uprooted a traditional perspective on life's ancient ancestry, if their supplanted tree-of-life metaphor is modified to look more like a ring-of-life.    Astrobiology Magazine -- One of science's most popular metaphors - the "tree of life," with its evolutionary branches and roots, showing groups of bacteria on the bottom and multicellular animals on the higher branches - turns out to be a misnomer, UCLA molecular biologists report in the Sept...
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Astronomers claim to have found the first firm evidence that cosmic rays can come from stars that have exploded, or supernova remnants.
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Nasa's robotic Mars rover Opportunity has found the first meteorite ever seen on the surface of the Red Planet.
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Scientists have confirmed that the Opportunity Mars  rover has run across a meteorite, sitting within the robot's exploration zone at  Meridiani Planum.
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While meteorites are often associated with the extinction of dinosaurs, new evidence suggests the impacts may actually engender new life. Commentary by Carl Zimmer.
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The scientific world has just been given an amazing new insight into the complexities of human evolution. A team of Indonesian and Australian scientists has discovered fossils of a new human