Readers who live in the LA area, as well as those passing through sometime between now and May 6, might want to head to Pasadena, and specifically to the Art Center for Design for an exhibit on 'The History of Space Photography.' The LA Times has a nice review of the exhibit.
If you go, you can see stuff like this 1882 photo of a comet:
Or this 2008 photo of a black hole:
More photos here. Details on the exhibit here.