Life Cycle of Stars

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.

Front

How does a star's mass affect its life span?

Back

Generally, the less mass a star has, the longer its life span. Smaller stars burn their fuel more slowly than larger stars.

Front

What is a main sequence star?

Back

A main sequence star is a star that is in the stable phase of its life cycle, where it fuses hydrogen into helium in its core.

Front

What happens to a star when it runs out of hydrogen fuel?

Back

When a star runs out of hydrogen fuel, it begins to fuse helium and may expand into a red giant or supergiant, depending on its mass.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle, often resulting from the collapse of a massive star's core.

Front

What is the difference between a red giant and a blue giant?

Back

A red giant is a large, cool star that has expanded and cooled after exhausting its hydrogen fuel, while a blue giant is a hot, massive star that burns its fuel quickly.

Front

What is a white dwarf?

Back

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

Front

What is a neutron star?

Back

A neutron star is the collapsed core of a massive star, composed almost entirely of neutrons, and is incredibly dense.

Front

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, formed from the remnants of a massive star.