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Stellar Dust Ring around Star HR 4796A The Vault
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This hoola-hoop in space is actually a dust ring around a young star, known as HR 4796A, which is about 70 percent larger than the Sun and probably less than 10 million years old. Dust rings like this one can only remain intact by some mechanism confining the dust. Astronomers believe that mechanism might be the formation of new planets.
(Longer Caption)


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