STARS

What is the process by which a star converts hydrogen to helium in its core?

Which stage in a star's life cycle comes after the main sequence?

What type of star is very large, cool, and has exhausted its core hydrogen fuel?

What type of star is small, hot, and has exhausted its nuclear fuel?

What is the name for extremely dense objects that form when a massive star collapses?

What is the name for the stage in which a star's core has collapsed and its outer layers have been ejected into space?

What is the name for the stage in which a high-mass star collapses and explodes?

Which type of star is the hottest?

Which type of star is the coolest?

The first stage in the life cycle of a star when the gas and dust in the nebula collapse and start to form a hot, dense core.