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How old is 'old' for a star?

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Anonymous

14y ago
Updated: 8/19/2019

Depends on how massive:

  • A star about 50 times the mass of ours will be old and dead in under 1 million years.
  • A star like ours has a life typically over 12 billion years.
  • A star with a mass just over half of ours has been computed to not enter old age for several trillion years, and take several trillion more to actually die. (such a star might still be around when the universe either collapses to nothing or expands so fast no subatomic particle can see another)
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Wiki User

14y ago

What else can I help you with?