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http://hubblesite.org/explore_astronomy/black_holes/home.html

These are the public entries for this link:

• Black Holes: Gravity's Relentless Pull
  An interactive web site that allows the user to travel and experiment with black holes.
  Black Holes: Gravity's Relentless Pull. Information, virtual journeys, and simulations about black holes from the Space Telescope Science Institute
  astronomy astrophysics black event gravity hole horizon hubble physics relativity simulation singularity space telescope
  By ashult in Astronomy with system:unfiled

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