Even with the sun high in the sky, this collapse pit on a Martian lava plain is so deep that even the super-sensitive Mars Reconnaissance Orbiter cannot see the bottom.

As the sunlight in the Martian arctic wanes, Phoenix is drawing less and less power, and mission managers have begun to gradually shut down its systems.

Portraits of the first planet taken during this month’s fly-by.

Saturn’s second-largest moon captured in natural color, drifting just below the rings that are seen nearly edge-on.

While Opportunity gets all the attention, Spirit continues to patiently wait out the long winter, working on a large panorama.