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How is a star able to begin helium fusion after it ran out of hydrogen?
The basic idea is that once a star runs out of hydrogen fuel, it starts contracting until it gets hot enough to fuse helium into heavier elements. This happens at temperatures that are quite a bit higher than the temperatures required to fuse hydrogen into helium.
Why does the main sequence star end?
A "main-sequence star" is one that fuses hydrogen into helium. Eventually, the star will run out of this specific type of fuel - in other words, it won't have enough hydrogen (at least, near its core) to continue this process.
What is the most common element in a young star?
The most common element in a young star is hydrogen. During the star formation process, vast amounts of hydrogen gas collapse under gravity to form a new star. This hydrogen fuel is what powers nuclear fusion reactions in the star's core, creating energy and sustaining the star's brightness.
What happens when a star uses hydrogen?
A neutron or white dwarf star is created in most cases when the star isn't large enough to collapse under its own weight and form a black hole. Our sun will be one of those stars.
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.
How many hydrogen particles in a star?
A star is made up primarily of hydrogen atoms. Hydrogen atoms consist of one proton and one electron. So, a star contains a very large number of hydrogen particles corresponding to the total mass and volume of the star, with each hydrogen atom having one proton.
Is aldebaran a giant star?
Yes, it is an orange giant star. It is an old star which has ran out of hydrogen fuel and has moved off the main sequence, having expanded to around 44 times the diameter of our own sun.
How is a star able to begin helium fusion after it ran out of hydrogen?
The basic idea is that once a star runs out of hydrogen fuel, it starts contracting until it gets hot enough to fuse helium into heavier elements. This happens at temperatures that are quite a bit higher than the temperatures required to fuse hydrogen into helium.
What are the two main gasses in one star?
hydrogen and helium
Can you build an engine that runs on and reuses water?
You could make one that ran off hydrogen.
What happens when a star burns all of its hydrogen?
When a star burns up all of its hydrogen,it becomes red in color.As hydrogen is the fuel for star and it will burst after it.
A star that is a has exhausted its supply of hydrogen?
A star that is a white dwarf has exhausted its supply of hydrogen.
Why does the main sequence star end?
A "main-sequence star" is one that fuses hydrogen into helium. Eventually, the star will run out of this specific type of fuel - in other words, it won't have enough hydrogen (at least, near its core) to continue this process.
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.
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 is the most common element in a young star?
The most common element in a young star is hydrogen. During the star formation process, vast amounts of hydrogen gas collapse under gravity to form a new star. This hydrogen fuel is what powers nuclear fusion reactions in the star's core, creating energy and sustaining the star's brightness.
What Star Wars film ran for 121 minutes?
The original release of Star Wars: A New Hope (1977) ran for 121 minutes.
