This Star Is Expelling Six Strange Rings of Cosmic 'Smoke' as It Dies - ScienceAlert

Our Sun's days are numbered. In about 5 billion years the Sun will expand into a red giant, casting off its outer layers before settling down to become a white dwarf.

Our Sun's days are numbered. In about 5 billion years the Sun will expand into a red giant, casting off its outer layers before settling down to become a white dwarf. It's the inevitable fate of mos… [+3267 chars]

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