Birth Of Polaris.
To understand how a star is born, first, you need to understand where they are born. Stars are formed in Nebulas, clouds of gas and dust in outer space. Stars are born when the materials in nebulas collapse into the center, heating up as the collection of material becomes more massive. Known as a Protostar, the hot core at the center of the cloud is sustained by nuclear fusion. This is what will one day become a star.
Conditions for a Star to be Born
The mass needed for a star to be born is approximately 80 times the mass of Jupiter
The element needed to form a star is Hydrogen
Conditions for a Star to be Born
The mass needed for a star to be born is approximately 80 times the mass of Jupiter
The element needed to form a star is Hydrogen
What Type of Star is Polaris?
Polaris is a Cepheid Variable. A Cepheid Variable is a variable star having a regular cycle of brightness with a frequency related to its luminosity, allowing estimation of its distance from the earth.
Nuclear Fusion
Nuclear fusion is an atomic reaction that fuels stars. When nebulas collapse into dense cores, they are sustained by nuclear fusion. Nuclear Fusion is a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy. When nuclear fusion occurs within stars, the element Hydrogen is converted into the element Helium. This happens when two protons combine to form a deuterium atom. A deuterium atom is a Hydrogen atom with on neutron and one proton. Then, the deuterium atom combines with a proton to form helium. For this to happen, there has to be a force strong enough to make like charges attract each other and then fuse with each other.