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发帖数: 298 | 1 A halo globular cluster gets shredded by our galaxy.
by Phil Plait
Orbiting the Milky Way can be hazardous to your health. Although most objects
serenely orbit our home galaxy, astronomers are now detecting invisible deadly
forces wreaking havoc upon some of them. Gravity, which keeps star, clusters,
and nebulae bound to the Milky Way, can also tear them apart.
The newest victim found is Palomar 5, a roughly 13-billion-year-old globular
cluster 75,000 light-years away. New observations of the cl |
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