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What star is so small in mass that its core never gets hot enough to sustain nuclear fusion reactions?
Wiki User
∙ 13y ago
It isn't a star unless it can sustain fusion. We might call such an object a "failed star", but unless it can sustain fusion it isn't a star at all.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoA brown dwarf.
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What does Nuclear Fusion have to do with stars?
The stars produce their heat from nuclear fusion reactions. Work on earth to produce controllable nuclear fusion is concentrating on one particular reaction, between deuterium and tritium, because it is the easiest to get going (though hard enough!). Stars operate with other reactions but all of the nuclear fusion type. You can read more in Wikipedia 'Nuclear fusion'
Are nuclear reactions and nuclear fusions the same thing?
Nuclear fusion is a nuclear reaction, but so is fission. So not all nuclear reactions are fission.
What layer of the sun does fusion occur?
Nuclear fusion occurs in the solar core.
Why doesn't nuclear fusion occur in the core of planets?
not enough heatnot enough pressureA planet roughly 10 times the mass of Jupiter would be just barely big enough to ignite fusion, but it could not sustain it.
Do fusion reactions provide nuclear power?
No, a fission reaction is not necessary to trigger a fusion reaction, but for us on earth, it is. In the field of nuclear weapons, a fission bomb is needed to create the heat necessary to set off a fusion weapon. We have to use fission, or, rather, the energy created by that, to initiate the fusion reaction. It might be possible to use a high power source, like a laser, on a small amount of material to get fusion to occur. But we are still experimenting with this in the Tokamak, and it's far from being a done deal. Stars are, in general, massive nuclear fusion reactors. Their constant consumption of fuel powering their high rate of fusion creates a massive amount of energy, and the stars' huge gravity keeps this process from blowing the whole thing apart. No fission is needed to sustain this reaction.
What does Nuclear Fusion have to do with stars?
The stars produce their heat from nuclear fusion reactions. Work on earth to produce controllable nuclear fusion is concentrating on one particular reaction, between deuterium and tritium, because it is the easiest to get going (though hard enough!). Stars operate with other reactions but all of the nuclear fusion type. You can read more in Wikipedia 'Nuclear fusion'
What are the type of nuclear reactions?
nuclear fission and nuclear fusion
What type of reactions can generate the most energy of nuclear?
Fusion and fission nuclear reactions.
Which nuclear reactions is the source of the sums energy?
Nuclear fusion
Nuclear reactions at very high temperature is known as?
You probably mean nuclear fusion
Is it a fission or fusion reaction?
Fission and fusion are different nuclear reactions.
Are nuclear reactions and nuclear fusions the same thing?
Nuclear fusion is a nuclear reaction, but so is fission. So not all nuclear reactions are fission.
What layer of the sun does fusion occur?
Nuclear fusion occurs in the solar core.
Types of nuclear reactions are?
There are four types of nuclear reactions. Fusion Fission Radioactive Decay Artificial Transmutation
Where do you get nuclear energy?
Nuclear energy is obtained through fission and fusion reactions.
Why doesn't nuclear fusion occur in the core of planets?
not enough heatnot enough pressureA planet roughly 10 times the mass of Jupiter would be just barely big enough to ignite fusion, but it could not sustain it.
What is the difference between the nuclear reactions taking place in the sun and the nuclear reactions taking place in a nuclear reactor?
The sun's nuclear reactions are fusion reactions at extremely high temperatures and pressures, while the nuclear reactor's nuclear reactions are fission reactions at typical temperatures and pressures for earth.
