PRESENTATION OUTLINE
THE LIFE OF A HIGH-MASS STAR
This is a nebula. It is a large cloud of gas and dust spread out in a large volume. This is where a star is born.
When gas and dust are pulled together by gravity in a nebula, it forms a protostar (the first stage of a star's life cycle).
When nuclear fusion occurs in a protostar, it forms into a main sequence star. The Sun is currently a main sequence star.
A high-mass main sequence star quickly evolves into a red giant.
Also quickly, the red giant evolves into a supergiant.
When the supergiant runs out of fuel, it can suddenly explode. This explosion is called a supernova.
A supernova can form into two things. The first is a neutron star, which are simply the remains of the high-mass star.
The second object a supernova can form into is a black hole. Only the most massive stars can form these and their gravity is so strong that nothing, not even light, can escape it.
