Stars
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Science
UY Scuti Reigns as the Universe’s Biggest Known Star, but Its Crown May Be at Risk
UY Scuti has a size 1,700 times the radius of our Sun. UY Scuti could engulf Jupiter's orbit, but rival…
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Science
Universe’s First Stars May Have Been Smaller Than Astronomers Once Believed
Two new studies show turbulence and molecular cooling allowed the first stars to form at smaller sizes. Astronomers once thought…