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The European Space Agency's new images show a 51-mile-wide ice-filled depression in the surface of Mars caused by the impact of a meteorite or other celestial body.
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The comet 46P/Wirtanen just made its closest approach to Earth in centuries. No word on the whereabouts of Dasher, Dancer, Prancer, Vixen, Cupid, Donner or Blitzen (and Rudolph).
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The milestone makes the 41-year-old NASA probe just the second human-made object, after Voyager 1, to reach such distant regions. Now, Voyager 2 is over 11 billion miles from the sun — and counting.
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Others have explored the far side of the moon from afar, but Chinese researchers are hoping a soft landing on the dark side of the lunar surface will allow for more detailed study.
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A Russian, an American and a Canadian were aboard the spacecraft when it lifted off from Russia's Baikonur Cosmodrome in Kazkahstan. It's the first launch since a failed mission in October.
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Scientists can't say whether there is, or ever was, life on the Red Planet. But two Martian rock samples contained organic molecules — which contain carbon, the chemical element central to life.
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Bean was the lunar module pilot of Apollo 12, which made the second moon landing, in 1969. Later in life, as a painter, he chronicled the people and experience of the Apollo program.
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The two satellites, which are collectively called GRACE and will replace two retired probes, are one of the most important tools for understanding the effects of climate change.
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First spotted in 2010, a space rock is zooming toward Earth, making a close pass on Tuesday that will see it fly safely by — about halfway between our planet and the moon.