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One of two things happens. One, it goes out, starts to contract because gravity is no longer balanced by radiation pressure, and rekindles as a HELIUM burning star (actually, it would be fusing that Helium into Carbon). Two, it just goes out and become a brown dwarf. The difference is how massive it is. The more massive, the more "lives" it can have as a star, but each one is shorter that the one before until it may spend less that a day making Iron and then go supernova.
What else can I help you with?
Where does hydrogen fusion occur when there is no hydrogen left in the core of a star?
If there is no hydrogen left at the core of star then hydrogen fusion cannot occur. What happens in the core of a star before that happens is that helium begins to fuse, and then the other elements going up the periodic table until carbon. And then if the star explodes into a supernova, traces of the higher elements are fused as well.
When the core of a star shrinks after hydrogen fusion stops the core heats up but what happens to the star?
The rest of the star expands.
The energy source of stars is primarily associated with?
The energy source of stars is primarily associated with nuclear fusion, where hydrogen atoms undergo fusion reactions to form helium, releasing a tremendous amount of energy in the process. This process occurs in the core of stars, where high temperatures and pressures allow fusion to take place.
What happens in the core that marks the birth of a star?
Nuclear fusion, converting hydrogen nuclei into helium nuclei.
How much hydrogen does a red giant phase have?
During the red giant phase, a star has typically exhausted the hydrogen in its core, leading to hydrogen fusion occurring in a shell surrounding the inert helium core. The outer layers of the star may still contain some hydrogen, but the core hinders further hydrogen fusion. The amount of hydrogen present varies depending on the star's mass and its evolutionary history, but it is significantly less than during the main sequence phase.
Where does hydrogen fusion occur when there is no hydrogen left in the core of a star?
If there is no hydrogen left at the core of star then hydrogen fusion cannot occur. What happens in the core of a star before that happens is that helium begins to fuse, and then the other elements going up the periodic table until carbon. And then if the star explodes into a supernova, traces of the higher elements are fused as well.
When the core of a star shrinks after hydrogen fusion stops the core heats up but what happens to the star?
The rest of the star expands.
Why does a star's hydrogen supply run out?
A star's hydrogen supply runs out because of nuclear fusion in its core. As hydrogen is fused into heavier elements like helium, the star's core temperature increases, causing it to expand and cool. Eventually, the core runs out of hydrogen to fuse, leading to the star's evolution into a different phase.
What does a main sequence star do when it has exhausted its burnable hydrogen?
Hydrogen fusion continues in a shell surrounding the core. Eventually the core is compressed enough to start helium fusion.
How is nuclear fusion in a main-sequence star is different from nuclear fusion in a giant star.?
Nuclear Fusion in a Giant Star involves Helium being fused into a hydrogen shell that surrounds the core, and Nuclear Fusion in a Main-Sequence star involves Hydrogen being fused into Helium to produce Energy inside of the core.
What is the first element that is converted in a star's core?
The first element that is converted in a star's core is hydrogen. Through nuclear fusion, hydrogen atoms fuse together to form helium, releasing energy in the process. This fusion process is what powers a star and allows it to shine.
How nuclear fusion in a main sequence is different from nuclear fusion in a giant star?
Nuclear Fusion in a Giant Star involves Helium being fused into a hydrogen shell that surrounds the core, and Nuclear Fusion in a Main-Sequence star involves Hydrogen being fused into Helium to produce Energy inside of the core.
The energy source of stars is primarily associated with?
The energy source of stars is primarily associated with nuclear fusion, where hydrogen atoms undergo fusion reactions to form helium, releasing a tremendous amount of energy in the process. This process occurs in the core of stars, where high temperatures and pressures allow fusion to take place.
What does helium have to do with a star?
Helium is formed in the core of the star (like the sun) by the nuclear fusion of hydrogen isotopes.
Why does a star grow larger after it exhausts its core hydrogen?
When a star exhausts its core hydrogen, nuclear fusion in the core stops, causing the core to contract and the outer layers to expand and cool, making the star grow larger. The increase in size is due to the star transitioning into the red giant phase as it starts burning hydrogen in a shell surrounding the core.
Does hydrogen fusion occur in the corona?
Hydrogen fusion does not occur in the corona of the sun. Fusion reactions occur in the sun's core where conditions are hot and dense enough for hydrogen nuclei to combine to form helium, releasing energy in the process. The corona is cooler and less dense than the core, so fusion cannot take place there.
What creates the heat and light in a star?
Nuclear fusion, in the star's core.Nuclear fusion, in the star's core.Nuclear fusion, in the star's core.Nuclear fusion, in the star's core.
