Life cycle of stars

Shown as number 1 on the diagram. All stars begin life in the same way forming from a cloud of dust and gas, also known as a ...

Shown as number 2 on the diagram, this type of star forms from a stellar nebula and spends most of its time on the main sequence as an orange, yellow, or blue-white dwarf star. It is known as ...

Shown as number 3, this type of star has exhausted the supply of hydrogen in its core and has begun

thermonuclear fusion of hydrogen in a shell surrounding the core. It is called ....

Shown as number 4 on the diagram, this is what stars like the Sun become after they have exhausted their nuclear fuel.

Shown as number 5 on the diagram, these types of stars are born in the same way as other stars. They are the most luminous stars and have a mass have a mass 3 - 50x that of the Sun. They are called

Shown as number 6 on the diagram, these stars are the largest known stars in the universe measuring more than a 1000x the size of our Sun. They are known as ....

Shown as number 7 on the diagram, this is a powerful and luminous stellar explosion. This event occurs during the last stellar evolutionary stages when a massive star is triggered into runaway nuclear fusion. It is known as a ....

Shown as number 8 on the diagram, these stars are the collapsed core of a massive supergiant star, which had a total mass of between 10 and 25 solar masses. They result from a supernova explosion. They are called ....

Shown as number 9 on the diagram, this is a region of spacetime where gravity is so strong that nothing (no particles or even electromagnetic radiation such as light) can escape from it. It is called ...

A star's lifecycle is determined by its ....