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Episode 56: Faintest Stars

Play Sep 14•4:19

Scientists have a theory about the size of stars. Stars must be about 80 times the mass of Jupiter in order to shine. It's the limit at which fusion can occur. Below that limit, scientists think, fusion occurs briefly before the object turns into a cool cinder called brown dwarf. New observations of nearby globular cluster NGC 6397 are helping confirm the theory. Globular clusters — compact g...

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