Sent by: Phoenix | From: Mars | Sent: September, 2008 | Credit: NASA/JPL/UA/Atkinson | Image source

A series of microscopic views showing tiny Martian dust grains, taken by the optical microscope onboard the Phoenix lander. Apparently some of the grains settled in the pile.

This animation, in highly stretched color, was built from the raw images by the talented Stuart Atkinson.