The only force acting on the nebulae is:

A star is born when:

When the core of a Red Giant collapses it becomes a:

When a massive star begins to cool and expand it is known as a:

When the core of a Red Supergiant collapses, a bright event occurs, known as:

Our sun is currently in what star stage?

A black hole is black because:

One possible outcome that is left after a supernova is a super dense core called a:

After a supernova, the core can collapse into a neutron star, or if massive enough it can become a:

When the core of a Red Supergiant collapses, a bright event occurs, known as:

Main sequence stars are made primarily of which elements?

A star that has begun nuclear fusion will last for:

When a nebula condenses and takes on a shape it is called:

The stable and longest lasting period of a star’s life cycle is called:

What is a celestial body that is composed of gas and emits light from nuclear fusion reactions?

The combining of two or more atoms in a stars core into a new heavier atom is called what?

What is the name of the dense ball of concentrated matter at the center of a rotating disk of nebular material? This material will heat up and eventually form a star.

What term do we use for an massive star that explodes? (These explosions are responsible for forming all atoms heavier than iron.)

The highly dense remains of a high mass star after a supernova. An object whose gravity is so strong that all atoms have been crushed into neutrons. What is it called?

What is the term for the high-density remains of a high mass star after a supernova? An object whose gravity is so strong that nothing, not even light, can escape.

At 10,000,000 degrees Celsius (10 million ^oC), hydrogen begins to change into helium and energy is released in a process called?

What are the final two stages of a star about the same size as our Sun?