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A star is born when contracting gas and dust from a nebula become so dense and hot that nuclear fusion starts.
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∙ 13y ago
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∙ 15y agolumps of ice, hydrogen and other particles from other stars join together to form a star.
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∙ 8y agoa protostar reaches a temperature high enough for nuclear fusion to begin
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∙ 13y agohelium and oxygen combine
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∙ 12y agoyes
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How is a protostar different from a star?
A star begins its life as a ball of gas and dust. Gravity pulls the gas and dust into a spere. As the sphere becomes denser, it gets hotter and eventually reaches temperature of about 10,000,000 Celsius in its center. As hydrogen combines into helium, energy is released in a precess called neclear fusion.
Will a protostar form near the end of a star's life cycle?
No, a protostar is basically the BEGINNING of a star's life cycle.
How long does a protostar live?
A protostar will live as long as 100,000 years. After material stops falling on the protostar it will enter then T Tauri star phase.
Is a new star called a protostar?
Yes
Protostar will turn into what kind of star?
That depends on the mass of the proto-star.
What variable determines wether a protostar becomes a star?
mass
When a protostar rises to 10000000 degrees celsius will a protostar become a star before or after nuclear fusion?
through the process of fusion, it becomes a star: the birth of the star is the start of fusion. therefore, it is after fusion that it is classified as a star.
When did the first star form?
The actual FIRST STAR is impossible to say when it existed. In the normal evolution of a star it becomes a protostar first. The life of a protostar is about 150,000 years before it becomes a main sequence star. But in the Early universe it is hard to say what was happening. They could have formed in days weeks months or even hours.
What is the first step of stellar evolution?
The formation of a protostar from a nebula. As the protostar forms, it accretes more mass from the cloud and spins. As it gains more mass, it eventually becomes massive enough to ignite the core and become a star. The protostar is the first step in the evolution of any star.
Are protostar a star?
A protostar is more like a stage previous to a star - before it ignites.
A protostar becomes a star when energy is released by the process of what?
Nuclear fusion. In the case of stars, it is often called nucleosynthesis.
How is a protostar different from a star?
A star begins its life as a ball of gas and dust. Gravity pulls the gas and dust into a spere. As the sphere becomes denser, it gets hotter and eventually reaches temperature of about 10,000,000 Celsius in its center. As hydrogen combines into helium, energy is released in a precess called neclear fusion.
Will a protostar form near the end of a star's life cycle?
No, a protostar is basically the BEGINNING of a star's life cycle.
What is happening to the star of a protostar?
A protostar is a star that is just beginning to form out of a stellar nebular (under gravity). The core of the gravitational collapse is getting more and more massive and is heating up as a result of the gravimetric contraction but has not yet reached the point where nucleosynthesis has begun in its core. It is when this happens that it becomes a star.
What is the name of a forming star?
Protostar
What is a star called before it is a star?
A star that is forming is called a protostar.
What is baby star?
A baby star is a newborn star. It is called "protostar."
