A report from Nature shows that astronomers may have found a medium-sized black hole, a kind they've long looked for.
The star cluster Omega Centauri contains millions of stars. The movement of some stars suggests that an intermediate-sized black hole lies at its center.
“So people have wondered, is it difficult to find them because they are just not there, or because it's difficult to detect them?” saysHe and some colleagues recently decided to look for one in a large, bright star cluster known as Omega Centauri. This densely-packed, spherical cloud of millions of stars is about 17,000 light years away.
Ultimately, the researchers were able to pick out seven stars in the center that are moving much faster than the others. These stars are actually moving so fast that they really should just shoot out of the star cluster and be gone forever.
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