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When will sun die?

The Sun is currently a middle-aged star, and it is expected to undergo several stages of evolution before reaching the end of its life. The Sun is classified as a G-type main-sequence star, and it is in the stable phase of its life cycle, where it fuses hydrogen into helium in its core.

Approximately in about 5 billion years, the Sun will exhaust its hydrogen fuel in the core and enter the next phase of its life cycle. It will expand into a red giant, consuming the inner planets, including Mercury and Venus. The outer layers of the Sun will be expelled into space, forming a planetary nebula, while the core will shrink and become a white dwarf.

The exact timeline can vary, but current astronomical models estimate that the Sun has around 5 billion years left before it goes through these phases. It's important to note that the expansion of the Sun into a red giant will have significant implications for any remaining planets in the solar system, possibly making Earth uninhabitable long before the Sun reaches the end of its life cycle.

For More Planetary Facts & Space Animation: Space Balls Videos

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