Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
Imagine the Universe: Black Holes
Information about the astrophysics of black holes on the website of NASA's High-Energy Astrophysics Learning Center. Suitable for ages 14 and up.