A star is born from the star formation process that occurs in large clouds of gas and dust in space called molecular clouds. The design process is complex and consists of several important stages.
Gravitational collapse: Molecular clouds consist of gas and dust. Regions in the cloud began to fall below its own gravity due to various factors such as turbulence, shock, or impact from nearby objects. When air is broken, it separates into small clumps.
Protostar formation: In the explosion, the density and temperature increase, resulting in the formation of a protostar; A hot, dense mass of gas and dust surrounded by a rotating disk. The protostar continues to accrete mass from the surrounding disk and envelope.
Accretion: The protostar continues to grow by collecting material from the disk around it. As the object falls towards the protostar, it releases gravitational energy, further heating the protostar. This phase can last from tens of thousands to millions of years, depending on the size of the protostar.
Pre-main sequence: When a protostar has accumulated a sufficient amount of mass, it enters a phase called pre-main sequence. During this time, the temperature of the protostar increases and eventually reaches a point where nuclear fusion occurs in its core.
Main Sequence: A star enters the main sequence by converting hydrogen into helium in its core. It releases energy in the form of light and heat. This is the phase where the star spends most of its life balanced between the inward pull of gravity and the outward pressure of nuclear fusion.
Next Main Series: Eventually the hydrogen gas in the star's core runs out. Depending on its size, the star will go through various stages of evolution, such as becoming a red giant, shrinking its outer layers to form a planetary nebula, and eventually turning into a white rock.
The characteristics of the star formation process will vary depending on the size of the star, the environment in which it formed, and other factors. However, these phases show that stars, including the Sun, are formed from a giant cloud of gas and dust in space.
Gravitational collapse: Molecular clouds consist of gas and dust. Regions in the cloud began to fall below its own gravity due to various factors such as turbulence, shock, or impact from nearby objects. When air is broken, it separates into small clumps.
Protostar formation: In the explosion, the density and temperature increase, resulting in the formation of a protostar; A hot, dense mass of gas and dust surrounded by a rotating disk. The protostar continues to accrete mass from the surrounding disk and envelope.
Accretion: The protostar continues to grow by collecting material from the disk around it. As the object falls towards the protostar, it releases gravitational energy, further heating the protostar. This phase can last from tens of thousands to millions of years, depending on the size of the protostar.
Pre-main sequence: When a protostar has accumulated a sufficient amount of mass, it enters a phase called pre-main sequence. During this time, the temperature of the protostar increases and eventually reaches a point where nuclear fusion occurs in its core.
Main Sequence: A star enters the main sequence by converting hydrogen into helium in its core. It releases energy in the form of light and heat. This is the phase where the star spends most of its life balanced between the inward pull of gravity and the outward pressure of nuclear fusion.
Next Main Series: Eventually the hydrogen gas in the star's core runs out. Depending on its size, the star will go through various stages of evolution, such as becoming a red giant, shrinking its outer layers to form a planetary nebula, and eventually turning into a white rock.
The characteristics of the star formation process will vary depending on the size of the star, the environment in which it formed, and other factors. However, these phases show that stars, including the Sun, are formed from a giant cloud of gas and dust in space.
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