Accelerate progress in our three core enterprises — Explore Worlds, Find Life, and Defend Earth. You can support the entire fund, or designate a core enterprise of your choice.
Hartley 2 from Deep Impact, October 23 Deep Impact took this photo of Hartley 2 on October 23, 2010, 11 days before its flyby of the comet. There is now a clear fuzz of coma and tail. The comet was 13 million kilometers from the spacecraft. NASA / JPL-Caltech / UMD