All About Black Holes:
In essence, black holes are the most amazing things in the universe because they represent everything that we know and everything that we don’t know. They stand as the final hurdle into creating a grand theory of everything.
Learn about these amazing structures at: http://www.fromquarkstoquasars.com/?p=14712
Image Credit: NASA/CXC/M.Weiss (Larger Image: ow.ly/sDwTL)