The Life Cycle of Stars

Front

What is the primary source of energy in the Universe?

Back

Most of the energy in the Universe is produced as stars undergo fusion.

Front

What is a nebula?

Back

A giant cloud of gas and dust in space that can collect due to gravity.

Front

What is a supernova?

Back

The explosion of a massive dying star.

Front

What does the H-R diagram help astronomers determine?

Back

A star’s internal structure and evolutionary stage based on its position in the diagram.

Front

Are humans made up of star dust?

Back

Yes, more than likely, humans are made up of star dust.

Front

What is the life cycle of a star?

Back

The life cycle of a star includes stages such as nebula, main sequence, red giant, supernova, and neutron star or black hole.

Front

What is fusion in the context of stars?

Back

Fusion is the process by which stars convert hydrogen into helium, releasing energy.

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, fusing hydrogen into helium.

Front

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

Back

It expands into a red giant and may eventually shed its outer layers.

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.