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Ares 3 Landing Site: The Martian Revisited
This close-up was taken from the Mars Reconnaissance Orbiter's HiRISE camera.
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Unusual Mountain Ahuna Mons on Asteroid Ceres
What created this unusual mountain?
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Stereo Helene
Get out your red/blue glasses and float next to Helene, small, icy moon of Saturn.
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Astronomy Picture of the Day: Methane Bubbles Frozen in Lake Baikal
What are these bubbles frozen into Lake Baikal? Methane. Lake Baikal, a UNESCO World Heritage Site in Russia, is the world's largest (by volume), oldest, and deepest lake, containing over 20% of the world's fresh water.
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Astronomy Picture of the Day: Asteroid Ryugu from Hayabusa2
This big space diamond has an estimated value of over 80 billion dollars.
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Astronomy Picture of the Day: Hayabusa2 Approaches Asteroid Ryugu
It looks like a big space diamond -- but with craters.
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Astronomy Picture of the Day: Saturn's Iapetus: Painted Moon
What has happened to Saturn's moon Iapetus? Vast sections of this strange world are dark as coal, while others are as bright as ice.
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Astronomy Picture of the Day: Aurora and Manicouagan Crater from the Space Station
How many of these can you find in today's featured photograph: an aurora, airglow, one of the oldest impact craters on the Earth, snow and ice, stars, city lights, and part of the International Space Station?
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Astronomy Picture of the Day: Craters and Shadows at the Lunar Terminator
Why does the right part of this image of the Moon stand out? Shadows.
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Astronomy Picture of the Day: Saturn's Hyperion in Natural Color
What lies at the bottom of Hyperion's strange craters?
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