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How many times longer does a 1.5-M star fuse hydrogen in its core than a 15-M star?
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∙ 12y ago
200 times longer
Wiki User
∙ 12y ago
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Where in the sun does hydrogen fuse into helium?
at or near the core
What star in the life cycle of stars fuses hydrogen and helium?
A "red giant" star can fuse both hydrogen (in the star's outer shells) and helium (in the 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 is a medium size yellow star composed mostly of hydrogen and helium?
All stars are composed mostly of hydrogen. The star fuses hydrogen into helium. The helium cannot escape the start until the end of the star's life cycle. Thus a middle-aged, medium sized star will be comprised of hydrogen and helium. As the star ages, it may start to fuse helium at its core into carbon. At this point it will likely expand into a red giant star, and thus would no longer be yellow.
Why does fusion occur in the core of the sun but not in the core of Jupiter?
Naturally occurring fusion reactions (for example, the reactions that fuel the Sun) occur due to extreme gravitational forces. The minimal mass required to create such a large gravity in the core thus igniting hydrogen fusion, is 0.08 solar masses. This is roughly 75 times the mass of Jupiter.
Where in the sun does hydrogen fuse into helium?
at or near the core
What element is created when hydrogen atoms fuse together in the sun and core?
Helium.
What star in the life cycle of stars fuses hydrogen and helium?
A "red giant" star can fuse both hydrogen (in the star's outer shells) and helium (in the 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 is happening in the interior of a star?
fusion. Hydrogen atoms fuse together deep in the core to form helium atoms and release energy
When does hydrogen first begin to fuse into helium in the star formation process?
When the temperature of the core reaches 10 billion degrees kelvin
Where is the sun's heat produced?
The Sun produces energy by the nuclear fusion of hydrogen into helium in its core. What that means is that, since there is a huge amount of hydrogen in the core, these atoms stick together and fuse into a helium atom. This energy is then radiated out from the core and moves across the solar system. The suns heat is produced by its atoms.
What is the process they generates energy into the core of the main sequence star?
Hydrogen fusion to make helium. When a star runs out of hydrogen in its core to fuse, it begins collapsing, leaves the main sequence, then ignites helium fusion to make carbon, becoming a red giant.
What temperature does a star start to fuse hydrogen?
The temperature at which hydrogen fuses is 10,000,000 degrees Kelvin. This is the minimum temperature the core of a proto star has to have to become a true star.
How old is the sun and since it's birth how has the sun changed?
4.5 Billion years old. It’s surface has got hotter as it burns the hydrogen at its core.
What element does hydrogen bond with inside the Sun?
It doesn't bond with anything. The sun is too hot for chemical bonds to form. In the core of the sun, hydrogen atoms fuse with each other to form helium.
Why do small giant stars become a Red Giant star instead of exploding?
Small stars are not giant, and their color isn't affected by their size. Main-Sequence stars of a mass the size of our sun will become a Red Giant. To explain why this happens I have to explain a little bit about how stars work. Stars work by fusing Hydrogen into Helium. As a star reaches the end of its life, it will at some point have consumed all of the Hydrogen in its core, and is nothing left but inactive Helium. When this happens, the core no longer fuses, but the surrounding layers of gas is still hot enough to fuse, and still has hydrogen. So after the core has stopped fusing hydrogen, the layers around the core begin to fuse hydrogen into helium. Because of this the star bulges out into its giant size, and because of the increased size, but not mass, the star gets cooler. usually around 5,000k. The typical density of the photosphere (Visible layer) is lower then the Earths atmosphere.
