Hubble image shows a glittering globular cluster of stars 23,000 light years away

Hubble image shows a glittering globular cluster of stars 23,000 light years away

Science Hubble image shows a glittering globular cluster of stars 23,000 light years away Great balls of fire. Hubble recently captured a dazzling image of the heart of globular cluster Terzan 9, a bright ball of stars 23,000 light years away. Globular clusters are tightly packed groups of tens of thousands — or even hundreds of thousands — of stars, bound by gravity into a dense glittering sphere about 100 light years wide. They’re among the oldest objects in the galaxy; every globular cluster astronomers have studied so far has been long past its star-forming years. But exactly how globular clusters form remains an open question. One of the most accepted ideas about globular clusters’ origins is that they’re the remnants of dwarf galaxies, captured long ago by the Milky …
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