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Nearby asteroids are a diverse bunch in terms of reflectivity and composition
'); document.write('Fri, 03 Sep 2010 10:06:00 EST
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A space-based survey of 101 objects that pass relatively close to Earth has found they have a wide range of reflectivity, indicating that their composition is varied as well. [More]

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Asteroid - Earth - Solar System - Astronomy - Small Bodies'); document.write('
Which Ray?: Conflicting Data on High-Energy Cosmic Rays Leave Their Source--or Sources--Unresolved
'); document.write('Mon, 30 Aug 2010 12:10:00 EST
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Nature certainly has a way of one-upping the fruits of human ingenuity. Extreme astrophysical objects have long been known to accelerate the particles that make up cosmic rays to whopping energies that make the Large Hadron Collider look like a child\'s slingshot. The mammoth collider near Geneva, Switzerland, which resumed service in 2009 after an aborted start-up the year before, will ultimately boost protons to energies of seven trillion electron volts. Cosmic-ray protons, in comparison, have been clocked striking Earth with tens of million times as much energy; a single proton can pack as much punch as a baseball hurled at 60 miles per hour. (For the technically inclined, some cosmic rays have energies exceeding 10 20 electron volts.) [More]

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Large Hadron Collider - Geneva - Electron volt - Switzerland - Cosmic ray'); document.write('
A Little Flight Music: NASA Contest for Wake-Up Songs Prompts Astronauts to Recall Tuneful Highlights
'); document.write('Fri, 27 Aug 2010 08:00:00 EST
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As deejay gigs go this is a short one, but the audience is captive and the venue is very exclusive. With a recently announced contest , NASA has opened the door to the public to choose music to be played for astronauts during the final two scheduled space shuttle missions. Four winning songs will serve as wake-up music on the missions, currently pegged for November and February launches. [More]

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NASA - Space Shuttle - Astronaut - Technology - Space'); document.write('