Aug 04 2011
Trickle of Salt Water — on Mars
An orbiting camera spies evidence of seasonal water on Mars' surface.
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Aug 04 2011
Earth May Have Had Two Moons
A new theory suggests the two moons then crashed together, forming our current moon.
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Aug 03 2011
Unidentified Sunken Object: Probably Not Alien
Deep ocean searchers have found what some are calling a UFO on the ocean floor. But are there other explanations?
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Aug 02 2011
A Budget Trip to Mars
SpaceX is talking with NASA about a mission to Mars, on the cheap.
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Aug 01 2011
No ‘Second Sun’ Boosting Asteroid Impacts
The idea that there may be a stellar twin patrolling the outermost regions of the solar system, scattering Oort Cloud objects, may be the result of statistical error.
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Jul 29 2011
Russia Backtracks on Plan to Sink Space Station
Despite earlier comments indicating the station would be sunk by 2020, a spokesperson says they hope to extend the station's life.
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Jul 29 2011
Population to Bulge, But Will Hit Ceiling
Speculation on population numbers raise questions about whether the planet can sustain us all.
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Jul 29 2011
When Lightning Strikes Out of a Blue Sky
An 11-year-old girl was struck by lightning on a bright, clear day. How does that happen?
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Jul 28 2011
Ancient Source of Earth’s Biggest Eruptions Found
The magma represents a remnant of the composition of early Earth -- before the crust separated from the mantle as Earth cooled.
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Jul 22 2011
Mass Extinction Caused by Deadly ‘Earth Burp’
The massive methane release led to an increase in atmospheric temperature around the globe.
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