Life Cycle of Stars

Front

What is a nebula?

Back

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

Front

What is a protostar?

Back

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

Front

How long is a medium-mass star like our sun expected to live?

Back

A medium-mass star like our sun is expected to live for about 10 billion years.

Front

What is the correct order for the life cycle of our star, the sun?

Back

The correct order is: nebula, fusion stage, red giant, white dwarf, black dwarf.

Front

What fuel do stars primarily use?

Back

Stars primarily use hydrogen as fuel for nuclear fusion.

Front

What happens during the fusion stage of a star's life cycle?

Back

During the fusion stage, hydrogen atoms fuse to form helium, releasing energy that powers the star.

Front

What is a red giant?

Back

A red giant is a late stage in a star's life cycle when it expands and cools after exhausting its hydrogen fuel.

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.

Front

What is a black dwarf?

Back

A black dwarf is a theoretical stage of a white dwarf that has cooled and no longer emits significant heat or light.

Front

What is gravitational collapse in the context of a massive star?

Back

Gravitational collapse occurs when a massive star's core collapses under its own gravity at the end of its life cycle.