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How Long Until Our Sun Explodes?

How Long Until Our Sun Explodes?

The Sun, like other stars of similar mass, will not explode in a supernova. Instead, it will undergo a different process known as stellar evolution.

The Sun is currently in the main sequence phase of its life cycle, where it fuses hydrogen into helium in its core. This process releases energy and keeps the Sun stable. However, over time, the Sun will exhaust its hydrogen fuel.

Based on current scientific understanding, it is estimated that the Sun has about 5 billion years of life left on the main sequence. As the hydrogen fuel in its core runs out, the Sun will enter a new phase called the red giant phase.

During the red giant phase, the Sun will expand and become much larger. Its outer layers will cool down and become less dense. It is expected to engulf the inner planets, including Earth, as it expands.

After the red giant phase, the Sun will shed its outer layers, forming a planetary nebula, leaving behind its core, which is called a white dwarf. A white dwarf is a dense remnant of a star that no longer undergoes fusion.

So, while the Sun will not explode, it will undergo significant changes in its later stages of life. The process from the current main sequence phase to the white dwarf stage is estimated to take several billion years.


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