STS-125 and HST
May 16th, 2009
STS-125 Atlantis and the Hubble Space Telescope captured as they pass in front of the Sun.
When galaxies collide
April 27th, 2008
When galaxies collide we get some really impressive pictures. (The first one on that page is especially fine.)
As I understand it, one day a few billion years from now it'll be our turn.
[Via Seed]