Life cycle of a star/HR diagram

Front

What is the life cycle of a star?

Back

The life cycle of a star is the series of stages a star goes through from its formation in a nebula to its eventual death, which can result in a white dwarf, neutron star, or black hole.

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, where stars are born.

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What is a main sequence star?

Back

A main sequence star is a stable phase in a star's life cycle where it fuses hydrogen into helium in its core, and it is the longest stage in a star's life.

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What happens to a star after it exhausts its hydrogen fuel?

Back

After exhausting its hydrogen fuel, a star can expand into a red giant or, if it is massive enough, explode as a supernova.

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What is a red giant?

Back

A red giant is a late stage in a star's life cycle where it has expanded and cooled, resulting in a reddish appearance.

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What is a white dwarf?

Back

A white dwarf is the remnant of a star that has exhausted its nuclear fuel and shed its outer layers, leaving behind a hot, dense core.

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What determines the path a star takes in its life cycle?

Back

The path a star takes in its life cycle is primarily determined by its mass.

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What is a supernova?

Back

A supernova is a powerful explosion that occurs at the end of a massive star's life cycle, resulting in a dramatic increase in brightness.

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What is a neutron star?

Back

A neutron star is the remnants of a supernova explosion, composed almost entirely of neutrons, and is extremely dense.

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What is a black hole?

Back

A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.