News tagged with early solar system

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Solar system ice: Source of Earth's water

Scientists have long believed that comets and, or a type of very primitive meteorite called carbonaceous chondrites were the sources of early Earth's volatile elements—which include hydrogen, nitrogen, ...

dateJul 12, 2012 in Space Exploration
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Neptune on tiptoes

(PhysOrg.com) -- The formation and development of the solar system, long a topic of study for philosophers and scientists, is today often used as a case study for the formation and development of planetary ...

dateMar 14, 2012 in Astronomy
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Giant planet ejected from the solar system

(PhysOrg.com) -- Just as an expert chess player sacrifices a piece to protect the queen, the solar system may have given up a giant planet and spared the Earth, according to an article recently published in ...

dateNov 10, 2011 in Astronomy
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Cosmic voyager has a layover in St. Louis

Last January two amateur meteorite hunters dropped by Randy Korotev's office at Washington University in St. Louis to show him their latest purchase, a 17-kilogram pallasite meteorite found in 2006 near Conception ...

dateNov 10, 2011 in Space Exploration
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Rendezvous with a near Earth object

(PhysOrg.com) -- One of the most accessible goals for human spaceflight is a rendezvous with a Near Earth Object (NEO). NEOs are asteroids or comets whose orbits take them close to the earth's orbit. An NEO ...

dateOct 25, 2011 in Space Exploration
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Amino acid alphabet soup

All life on Earth relies on a standard set of 20 amino acids to build the proteins that carry out life's essential actions. But did it have to be this way?

dateAug 19, 2011 in Cell & Microbiology
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