HubbleSite: Black Holes

This site explores black holes and lets you travel through space to get to them. Interesting concept. The Journey to a Black Hole starts with exploring space and finding the invisible. From there, you choose your destination and take off on a trip in your space capsule. Once you’ve reached the black hole, you can read answers to questions or run some experiments. These range from finding the mass of a black hole to falling into one.
HubbleSite: Black Holes