This is an early stage of a star. There is no nuclear fusion yet.

Our sun is in this young-adult stage of a star.

At this stage, the star burns helium until it forms a carbon core and other heavier elements.

Like our sun, this star burns Hydrogen for millions, NOT billions of years with nuclear fusion, forming Helium at the core.

Remains of a dying star. It is still very hot and bright.

A dead star that is no longer hot nor bright.

A glowing star burning Helium gas in its core until the fusion of heavier elements like iron occurs.

The collapse of the core happens in less than a second, creating a huge explosion that's brighter than the entire galaxy.

If the star survives the explosion, the core condenses into a tiny and super heavy material used to make hammers for Thor.

After the supernova explosion, the gravity of the collapsing core becomes so strong that not even light can escape from being suctioned.

What type of gas fuels/feeds the Nuclear Fusion reaction?

What type of gas is formed during fusion in a main sequence star?

A cluster of stars, gas, and dust that are kept together by the force of gravity. Within there are also planets, black holes, moons, comets, and dark matter.