Jakarta –
Bintang-Stars form in very large clouds of gas and dust called nebulae. Even though they can shine for thousands and even millions of years, stars also have a life cycle.
The changes that occur in a star over time and in the final stages of its life depend on the size of the star. Each star has a different size.
Bintang the largest supergiants can be more than 1,500 times as massive as the Sun. Can you imagine, its diameter can reach 2,000 million km. Compare with the diameter of the Earth which is no more than 40 thousand km.
As mentioned above, the process of star formation starts from a nebula, which consists mostly of hydrogen.
Protobintang
Quoted from the National Aeronautics and Space Administration (NASA) website, over time, the dust and gas in the nebula are held together by gravitational forces. They start spinning.
From here, protostars are born which can be analogous to the embryo of a star. When the mass falls together, it gets hot.
Main Sequence Star
A star forms when it is hot enough for hydrogen nuclei to fuse together to make helium. This fusion process releases energy that keeps the star’s core hot.
Now then the cycle will enter the phase of the main sequence star. This phase is an example where the sun is currently in a stable phase.
During a stable phase in a star’s life, the gravitational forces that hold the star together are balanced by higher pressure due to higher temperatures.
Red Giant Star
When all the hydrogen has been used up in the fusion process, a larger core begins to form and the star can expand to become a red giant.
White Dwarf
When all the nuclear reactions are over, a small star like the Sun might start to contract under the pull of gravity. In this case, the star becomes a white dwarf that fades and changes color as it cools.
Supernova
A bigger star with a greater mass will continue to carry out nuclear reactions, getting hotter and expanding until it explodes as a supernova. Exploding supernovas throw hot gas into space.
Neutron Star or Black Hole
Depending on the mass at the beginning of its life, the supernova will leave bintang neutrons or black holes.
Watch Video “Ma’ruf Amin Asks Officers to Arrest KKB in the Bintang Mountains of Papua“
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