Stars are made of mostly which two gases?

A star is born in a cloud of gas and dust called a __________

Stars give off heat and light in a process called ___________.

In the process of nuclear fusion, hydrogen atoms combine to form ___________ atoms.

The luminosity of a star describes its ______________.

Stars that are much bigger than the Sun are called _______________.

Stars that are much smaller than the Sun are called _________________.

 What happens when a massive star's life ends?

What is the name of the explosion at the death of a massive star?

What word best describes our sun?

a massive ball of gas held together by gravity with a core so hot that nuclear fusion occurs

Why do other stars appear so much smaller than the sun?

Our solar system is in which galaxy?

All stars begin their life as a____

______ is a force that causes dust particles to stick together in a nebula.

A gigantic explosion that causes the death of a large star is called___.

A star at the stage in its life cycle when it stops burning hydrogen, begins burning helium, and expands to a large, low-density star. What stage in the life cycle does this describe? 

This is a young star that glows as gravity brings it together.

What is the name of the largest stars?