Gravity pulls gases and dust particles in space toward one another, squeezing them into a smaller and smaller space. The temperature at the center rises and will eventually lead to nuclear fusion of hydrogen.

What stage in a stars life cycle is this describing?

A star at the stage in its life cycle when it stops burning hydrogen, begins burning bigger elements, and grows much bigger to a large, low-density star.

What stage in the life cycle does this describe?

In a large mass star, the temperature reaches more than 100 billion degrees. The repulsive forces between the iron nuclei cause a massive explosion sending the star’s mass into space in a ....

A relatively small, dense star at the end of its life cycle, which generates little energy creating a faint white light and has contracted to its densest state.

What stage in the life cycle does this describe?

A series of bursts that create a cloud of gas and dust in outer space ejected by an aging star near the end of its life cycle.

What stage in the life cycle is this describing?

What stage of the life cycle of a star could this possibly be?

What stage in a stars life cycle is this which can create a pulses of light?

Which stage of a star's life is this image showing?