(Phys.org) -- Researchers creating electricity through photovoltaics want to convert as many of the sun’s wavelengths as possible to achieve maximum efficiency. Otherwise, they’re eating only a small part of a shot ...
Nanophysics
Jun 18, 2012
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(Phys.org) -- In a step toward returning NASA's Mars Odyssey orbiter to full service, mission controllers have tested a spare reaction wheel on the spacecraft for potential use with two other reaction wheels in adjusting ...
Space Exploration
Jun 15, 2012
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Most of today's power plants--from some of the largest solar arrays to nuclear energy facilities--rely on the boiling and condensing of water to produce energy.
Energy & Green Tech
Nov 7, 2011
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With the space shuttle now history, NASA's next great mission is so audacious, the agency's best minds are wrestling with how to pull it off: Send astronauts to an asteroid in less than 15 years.
Space Exploration
Jul 23, 2011
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Sometimes you encounter an idea so seemingly brilliant you wonder why you didn't think of it yourself. OK, here goes: Utility-grade "concentrating" solar power ... in water. You're not applauding - what's going on?
Energy & Green Tech
Apr 25, 2011
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(PhysOrg.com) -- Hopes for reviving NASA's Spirit Mars rover dimmed further with passage last week of the point at which the rover's locale received its maximum sunshine for the Martian year.
Space Exploration
Mar 21, 2011
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(PhysOrg.com) -- NASA's Mars Odyssey orbiter put itself into a safe standby mode, and the mission team has begun steps to resume the spacecraft's science and relay operations this week.
Space Exploration
Jul 21, 2010
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"Standard orbit, Mr. Sulu." Captain Kirk barks out the order with such confidence. He knows the USS Enterprise can slip in and out of planetary orbits with ease. But it's only easy in the realm of science fiction. In the ...
Space Exploration
May 5, 2010
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(PhysOrg.com) -- The rover team has begun driving Spirit backward as next technique for attempting to extricate the rover from the sand trap where it is embedded. The first two backward drives produced about 6.5 centimeters ...
Space Exploration
Jan 22, 2010
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(PhysOrg.com) -- Results of diagnostic tests on Spirit's right-rear wheel on Sol 2109 (Dec. 8, 2009) continue to indicate a troubled wheel, which may leave the rover with only four operable wheels.
Space Exploration
Dec 10, 2009
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