Event Horizon
From Robot Wisdom Weblog, a link to an article over at PhysOrg.com. Here's an excerpt:By a score of 135 to zero, scientists using NASA's Rossi X-ray Timing Explorer have compared suspected neutron stars and black holes and found that the black holes behaved as if each one has an event horizon, the theoretical border from beyond which nothing, not even light, can escape.
The team found that X-ray light emitted from these two types of regions behaved differently. As expected, the neutron stars appeared to have a hard surface, which erupts in an X-ray explosion every several hours. The black holes appeared to have no surface. Matter falling toward the black hole seems to disappear into the void.
Here's a link to the full story:
http://www.physorg.com/printnews.php?newsid=9693.
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