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Alien Invader Attacks in "Battleship"
Seth Shostak, a senior astronomer at the SETI Institute, talks all things "Battleship."
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Titan’s Orangey Blue Haze Up Close
From Enceladus and Titan to Europa and Mars, here are the likeliest spots to find extraterrestrials.
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Mockup of Curiosity Mars rover in Death Valley in May 2012
The "Scarecrow" test rover went out to California's Mojave Desert last week.
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Distant Star KOI-872
A second look at observations from the Kepler telescope revealed a planet missed the first time.
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This artist's concept shows the super-Earth planet  55 Cancri e. It's a toasty world 41 light-years from Earth that rushes around its star every 18 hours.
The feat reveals new details of the weird alien super-Earth 55 Cancri e.
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A rock fragment from an ancient volcanic eruption on Mars
Mars' atmosphere may have been roughly 20 times thicker 3.5 billion years ago than it is today.
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