Flying Under Comet Hartley 2
This image montage shows comet Hartley 2 as NASA's EPOXI mission approached and flew under the comet. The images progress in time clockwise, starting at the top left.
The image was taken by EPOXI's Medium-Resolution Instrument on Nov. 4, 2010. The sun is to the right.
Image credit: NASA/JPL-Caltech/UMD