Life Cycle of Stars

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What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.

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What is the main sequence stage in a star's life cycle?

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The main sequence is the longest stage in a star's life cycle where it fuses hydrogen into helium in its core.

Tags

NGSS.HS-ESS1-1

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What happens to a star after it becomes a red giant?

Back

After the red giant stage, a star can become a planetary nebula or a supernova, depending on its mass.

Front

What is a planetary nebula?

Back

A planetary nebula is a shell of gas ejected from a star during the late stages of its evolution.

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What is a protostar?

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A protostar is an early stage in the formation of a star, formed when a nebula collapses under its own gravity.

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What is a black hole?

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

Tags

NGSS.HS-PS2-4

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What is a supernova?

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A supernova is a powerful explosion that occurs at the end of a star's life cycle, often resulting in the formation of a neutron star or black hole.

Tags

NGSS.HS-ESS1-3

Front

What defines a white dwarf?

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

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What is the life cycle of an average star like our sun?

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The life cycle of an average star includes stages: nebula -> main sequence -> red giant -> planetary nebula -> white dwarf.

Front

What is the difference between a neutron star and a black hole?

Back

A neutron star is the collapsed core of a massive star, while a black hole is a point of infinite density where gravity is so strong that nothing can escape.