What do stars initially form from?

What are the clouds of dust and gas which form stars called?

What does the force of gravity cause dust and gas to do?

What quickly happens to a protostar?

What happens as the protostar develops?

What happens when temperature gets high enough in a protostar?

When the protostar heats up enough, what stage does it enter?

What happens once a star is in its main sequence?

How long does the main sequence of a star normally last?

How does the size of a star change during its main sequence?

Why are main sequence stars stable?

When a star is in its main sequence, how do outward and inward forces balance?

If a star has more mass, will its main sequence be longer or shorter?

Why will a star with more mass have a shorter main sequence?

When does a star “die”, ending its main sequence?

What do we call small stars?

What happens to small stars once they die?

Why are Red Giants red?

When a Red Giant cools, what happens?

What is the name for the dust and gas a Red Giant ejects?

What is left over once a Red Giant ejects its outer layer?

What is a white dwarf?

What happens to a white dwarf over time?

What do we call large stars?

What happens to large stars once they die?

What do Red Supergiants do?

What process forms elements in Red Supergiants?

What is a difference between Red Giants and Red Supergiants?

What else is a difference between Red Giants and Red Supergiants?

What happens once a Red Supergiant runs out of fuel?

What happens once a Red Supergiant stops fusion?

What happens in a supernova?

What do the new elements formed in a supernova do?

When a supernova explodes, what happens?

What is most commonly left after a supernova explosion?

If the large star is big enough, what is left after a supernova?

What is a black hole?

What gives black holes their name?

What will a light star smaller than the Sun never undergo?

What will a very large star never form?

What happens to force when hydrogen fuel in the star core runs out?

When the force of gravity is larger than the outward pressure on a star, what happens?

How are elements heavier than iron produced?

How are elements lighter than iron produced?

What does nuclear fusion give out?

What do hydrogen nuclei first form in nuclear fusion?

What does the energy released by nuclear fusion provide?

What does all the mass in the star cause?