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Boomerang Nebula; the coldest place in the universe has been found Via Time Science & Space
The Sun lowering behind the rim of the Gusev crater on Mars, taken by NASA's Spirit Rover.
Peeking at Saturn: "Cassini peers around the hazy limb of Titan to spy the sunlit south pole of Saturn in the distance beyond. The thick, smog-like atmosphere of frigid Titan is a major source of interest for the Cassini mission. The moon is 5,150 kilometers (3,200 miles) across."