How does stellar formed?
Stars are born out of the gravitational collapse of cool, dense molecular clouds. As the cloud collapses, it fragments into smaller regions, which themselves contract to form stellar cores. This causes the star to expand enormously and increase in luminosity – the star becomes a red giant.
What is the stellar theory?
Stellar evolution is the process by which a star changes over the course of time. Stars with at least half the mass of the Sun can also begin to generate energy through the fusion of helium at their core, whereas more-massive stars can fuse heavier elements along a series of concentric shells.
How are stars born?
A star is born when atoms of light elements are squeezed under enough pressure for their nuclei to undergo fusion. And once the fusion reactions begin, they exert an outward pressure. As long as the inward force of gravity and the outward force generated by the fusion reactions are equal, the star remains stable.
How are elements formed in the stellar evolution?
Stellar nucleosynthesis is the process by which elements are created within stars by combining the protons and neutrons together from the nuclei of lighter elements. All of the atoms in the universe began as hydrogen. Heavier elements are created in different types of stars as they die or explode.
What do you need to know about stellar?
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What is the story of stellar evolution theory?
The story of star formation in stellar evolution theory begins with a process astronomers cannot observe operating in nature today. Because they were first, Population III stars would not have formed by the same mechanisms that evolutionists use to explain the origin of Population I stars, which are observed today.
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