Mysterious New 'Dark Flow' Discovered in Space. "As if the mysteries of dark matter and dark energy weren't vexing enough, another baffling cosmic puzzle has been discovered. Patches of matter in the universe seem to be moving at very high speeds and in a uniform direction that can't be explained by any of the known gravitational forces in the observable universe. Astronomers are calling the phenomenon 'dark flow.' The stuff that's pulling this matter must be outside the observable universe, researchers conclude." [more inside]
posted by homunculus on Sep 25, 2008 - 73 comments

Does a boomerang thrown in space return to its pitcher? It does indeed. [Via]
posted by homunculus on May 1, 2008 - 62 comments

Bursting water balloons in a low-gravity environment. This is really cool.
posted by homunculus on Jun 3, 2002 - 5 comments