0
It begins collapsing, which causes gravitational heating.
If the mass of the star is below a certain threshold the collapse stops, leaving a white dwarf.
If the mass of the star is above a certain threshold the gravitational heating makes the star hot enough to ignite helium fusion and the star begins making carbon. The now very hot stellar core makes the star expand to a red giant.
What else can I help you with?
Hypothesize what will happen when the sun exhausts it's supply of hydrogen?
When a main sequence star, such as our sun, exhausts it's supply of Hydrogen, fusion of Hydrogen to Helium ceases in the core. This results in cooling of the core and therefore causes it to contract. As the core contracts, the layers surrounding the star gain kinetic energy until the fusion of Hydrogen is possible in the outer layers. As these layers undergo fusion, they increase in temperature dramatically. The outer layers expand due to heat, and the star becomes massive; the main sequence star has evolved into a red giant. Fusion of Hydrogen to Helium continues in the outer layers, whilst the fusion of heavier elements such as carbon occurs in the core.
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.
Why does the amount of hydrogen in a star decrease?
The amount of hydrogen in a star decreases over time because hydrogen fuses into helium through nuclear reactions in the star's core, releasing energy in the process. As the star continues burning hydrogen, it eventually exhausts its hydrogen fuel supply, leading to changes in its structure and behavior.
What type of stars are red giants?
These are stars that have exhausted their core's supply of hydrogen by switching to a thermonuclear fusion made of hydrogen in a shell that surrounds the core.
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 happens to Hydrogen atoms in a star's core?
its clears air
What is it called that has exhausted it's supply of hydrogen?
A star that has exhausted the hydrogen in its core will become a red giant or supergiant.
Which star expands due to fusion?
As a star ages and runs out of fuel in its core, it can expand in size as it transitions into a red giant. During this phase, fusion reactions occur in the outer layers of the star, causing it to expand and cool. This expansion happens when the star exhausts its hydrogen fuel and begins fusing helium in its core.
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.
What happens in the core of the star when it runs out of hydrogen fuel?
When a star exhausts its hydrogen fuel in the core, nuclear fusion ceases, leading to a drop in outward pressure. This causes the core to collapse under gravity, increasing temperature and pressure until it becomes hot enough to fuse helium into heavier elements. As the core contracts, the outer layers may expand and cool, often transforming the star into a red giant. Eventually, this process leads to the star's evolution into later stages, such as a supernova or a white dwarf, depending on its mass.
When a main sequence star runs out of hydrogen t fuel the core which type of star begins t from?
When a main sequence star exhausts its hydrogen fuel in the core, it begins to evolve into a red giant. As hydrogen fusion ceases in the core, the core contracts and heats up, while the outer layers expand and cool, giving the star a red appearance. Eventually, the core may start fusing helium into heavier elements, leading to further evolutionary stages depending on the star's mass.
What happens what a star has lost all of its hydrogen?
When a star exhausts its hydrogen fuel, it can no longer sustain the nuclear fusion processes that power it. As a result, the core contracts and heats up, eventually leading to the fusion of heavier elements like helium. This causes the outer layers of the star to expand, transforming it into a red giant. Eventually, the star may shed its outer layers, resulting in a planetary nebula, while the core remains as a white dwarf.
