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What is a star called before it is born?
A star is called a protostar before it begins nuclear fusion in its core and officially becomes a star. During this stage, a protostar is formed from a collapsing cloud of gas and dust, as gravity pulls material together and heats up the core.
When does a protostar become a star?
The basic idea is that the protostar contracts, under the influence of gravity, until it gets dense and hot enough to undergo nuclear fusion. You can find more details at the Wikipedia article "Protostar".
What is a new star called?
A newly formed star is called a protostar. This is the early stage of a star's life cycle when it is still accumulating mass from its surrounding gas and dust. Once a protostar reaches a critical mass and temperature, nuclear fusion begins and it becomes a fully-fledged star.
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 is a protostar different from a star?
A protostar is a collapsing cloud of gas and dust in the process of becoming a star, while a star is a luminous sphere of plasma held together by its own gravity and shining through nuclear fusion in its core. Protostars are still in the early stages of stellar evolution, while stars have reached a stable state of energy equilibrium.
What variable determines wether a protostar becomes a star?
mass
What is a contracting cloud of gas and dust with enough mass to form a star?
it's a protostar
What is a star called before it is born?
A star is called a protostar before it begins nuclear fusion in its core and officially becomes a star. During this stage, a protostar is formed from a collapsing cloud of gas and dust, as gravity pulls material together and heats up the core.
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.
When does a protostar become a star?
The basic idea is that the protostar contracts, under the influence of gravity, until it gets dense and hot enough to undergo nuclear fusion. You can find more details at the Wikipedia article "Protostar".
When a protostar rises to 10000000 degrees celsius will a protostar become a star before or after nuclear fusion?
A protostar must reach about 10 million degrees Celsius for nuclear fusion to start in its core, triggering the transition into a true star. This marks the point where hydrogen atoms begin fusing into helium, releasing energy in the process. So, a protostar will become a full-fledged star after nuclear fusion begins at this temperature.
When does the protostar become balanced?
A protostar becomes balanced when the gravitational forces pulling matter inward are balanced by the outward pressure due to nuclear fusion at its core. This marks the transition from a contracting protostar to a stable star in the main sequence phase of its lifecycle.
What is a new star called?
A newly formed star is called a protostar. This is the early stage of a star's life cycle when it is still accumulating mass from its surrounding gas and dust. Once a protostar reaches a critical mass and temperature, nuclear fusion begins and it becomes a fully-fledged star.
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.
