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When the core of a protostar has reached about 10 million K, pressure within is so great that nuclear fusion of hydrogen begins, and a star is born.

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Inside a prostar the nuclear fusion of hydrogen will begin when?

The core of the protostar reached an extremely high temperature


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.


why is a protostar the second phase of a star's life?

A protostar is the second phase of a star's life because it forms after a molecular cloud collapses under its own gravity, leading to the accumulation of material in a dense core. This core heats up as it contracts, eventually reaching temperatures and pressures sufficient to initiate nuclear fusion. The protostar stage is characterized by the gathering of mass and the development of a surrounding disk of gas and dust, which can eventually form planets. Once nuclear fusion begins in the core, the protostar evolves into a main sequence star.


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 the site of nuclear fusion on the sun?

If you are asking where does solar nuclear fusion take place, then that would be at the core of stars.

Related Questions

Inside a prostar the nuclear fusion of hydrogen will begin when?

The core of the protostar reached an extremely high temperature


How hot is the core of a protostar?

The core will reach between 250,000,000 to 500,000,000'C at its stable temperature. Beforehand it will rapidly gain heat from hundreds of thousands to its stable temperature, where it can begin the process of nuclear fusion. Hope that helps!


What is the process by which a protostar is heated up to initiate nuclear fusion and become a star?

A protostar is heated up by gravitational forces causing it to contract and increase in temperature. Once the core reaches a high enough temperature and pressure, nuclear fusion reactions begin, releasing energy and making the protostar shine as a star.


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.


How are stars formed, step by step, from the initial collapse of a cloud of gas and dust to the ignition of nuclear fusion in their cores?

Stars are formed through a series of steps starting with the gravitational collapse of a cloud of gas and dust. As the cloud collapses, it heats up and forms a protostar. The protostar continues to contract and heat up until the core reaches temperatures high enough for nuclear fusion to begin. Once nuclear fusion ignites in the core, the star is born and begins to shine brightly.


A protostar forms once the nebular cloud condenses and the core begins?

to grow dense and hot due to gravitational contraction. As the core heats up, it triggers the start of nuclear fusion, becoming a main sequence star.


A protostar becomes a star when?

A protostar becomes a star when nuclear fusion begins in its core, converting hydrogen into helium and releasing energy. This process generates enough heat and pressure to balance the force of gravity, causing the protostar to shine brightly as a star.


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".


why is a protostar the second phase of a star's life?

A protostar is the second phase of a star's life because it forms after a molecular cloud collapses under its own gravity, leading to the accumulation of material in a dense core. This core heats up as it contracts, eventually reaching temperatures and pressures sufficient to initiate nuclear fusion. The protostar stage is characterized by the gathering of mass and the development of a surrounding disk of gas and dust, which can eventually form planets. Once nuclear fusion begins in the core, the protostar evolves into a main sequence star.


What is a contracting cloud of gas and dust with enough mass to form a star?

it's a protostar


What come after a nebula?

After a nebula, the next stage in the life cycle of a star is usually a protostar, where gravity causes the gas and dust within the nebula to begin collapsing and forming a dense core. Following this stage, the protostar may evolve into a main sequence star, where nuclear fusion begins in its core and it enters a stable period of energy production.


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.