Whether a living or non-living object, everyone has a particular life cycle. It starts right from the birth and ends upon the death of that object. Just like others, stars also have their own life cycle.
Nebula ⇒ Protostar ⇒ Supergiant ⇒ Supernova ⇒ Neutron star
In the initial stage, a star is in the form of a nebula. At this stage, it is a huge cloud of gas and dust. The changes occur in the star and the final size totally depends upon the size of that star.
In a massive star, the fuel is used very quickly because of its life span of a few hundred thousand years. The second stage is the Protostar.
The next stage is the Supergiant. At this stage, the nuclear reactions that occur because of the hydrogen will gradually run out and the star will enter the final phase of its life span. The bigger star will have more massiveness.
Following this, the star will enter the next stage, i.e. Supernova and neutron star. In a Supernova, the star will have a very energetic and violent end. In the last stage, when the dust particles clear, a neutron star will be visible.
For better understanding, an image is attached at the end.
Thus, the life cycle of a high-mass star is arranged from its birth to its death.
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