Week's Best Space Pictures

See a Surprise Comet Landslide and a Gleaming Dwarf Galaxy

Also this week, NASA gets a stunning look at a Martian dune field, and Saturn's moon Dione comes in for a close-up.

Feed your need for heavenly views of the universe with our pick of the most awe-inspiring space pictures.

This week, Mars's polar ice caps reveal their layers, Hubble spots a dwarf galaxy as it looked more than 15 million years ago, and wind and water shape an incredible landscape off the coast of North Carolina.

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