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When Will the Sun Become a Red Giant?

šŸ’” The Answer

  • In about 5 billion years, the Sun will exhaust its core hydrogen fuel.
  • It will expand into a red giant, engulfing Mercury, Venus, and possibly Earth.
  • Helium fusion will begin in the core, causing further changes.
  • Eventually it will shed its outer layers, leaving a white dwarf.

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šŸ“… On This Day — September 133 events →

1922 — The final act of the Greco-Turkish War, the Great Fire of Smyrna, commences.

1922 — The final act of the Greco-Turkish War, the Great Fire of Smyrna, commences.

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