Read the paragraph then fill in the blanks with the correct words.
It all starts with 1.
cloud of gas and dust particle in outer space.
Due to the force of gravity, the 2.
gas is pulled together and eventually
became a protostar. Nebular fusion occurs at the center of the protostar and becomes
stable. During this time, hydrogen is converted into 3.
forming main
sequence star. The size of the star can be average or massive. A massive main
sequence star that runs out of hydrogen fuel will begin to expand and cool down.
This is 4.
the collective term for massive stars in the universe. The
red super giant continues to fuse with heavy elements and stops when 5.
is converted in the core of the star. At this point, red super giant will become a
supernova after hundreds of years.​