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In stars more massive than the Sun fusion continues until the core is almost all?
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What is massive body of plasma that shines due to energy released by nuclear fusion?
The sun and other stars.
Why can't massive stars generate energy from iron fusion?
Because iron has no more excess binding energy left to release. Iron fusion consumes energy, it does not generate it.
What is the difference between red and brown dwarf stars?
Red dwarf stars are massive enough to undergo nuclear fusion, so they would burn a long time before they run out of fuel. Brown dwarves are not massive enough for nuclear fusion, so almost all of its light come from the time when the brown dwarf was formed. Over a long period of time, a brown dwarf would cool down into a gas giant similar to Jupiter.
Does nuclear fusion occur in stars?
Nuclear fusion takes place only in the core of the Sun, or any star. Extremely high energy (temperatures) are required to force atomic nuclei together. The fusion reaction releases heat energy, which continues the fusion of other nuclei.
Was mars going to be a star?
No. Mars is teeny-tiny compared to the largest planet, Jupiter. Jupiter is perhaps a couple of hundred times to small to be a star. Stars have massive size which creates massive heat, which results in nuclear fusion.
Does nuclear fusion in massive stars create heavy elements?
yes
What is massive body of plasma that shines due to energy released by nuclear fusion?
The sun and other stars.
What type of reaction causes stars to combine hydrogen and release massive amounts of radiation?
This involves "nuclear fusion" reactions.
Can iron undergo fusion in any star?
No. Only the most massive stars can fuse iron.
Why can't massive stars generate energy from iron fusion?
Because iron has no more excess binding energy left to release. Iron fusion consumes energy, it does not generate it.
Why is massive star more luminious than a less massive star?
This fact can explain with the help of nuclear fusion in small stars and massive stars in small stars like our sun nuclear fusion followed by the proton -proton chain reaction in which main products are positron, gamma ray photon, neutrino and isotopes of hydrogen and helium and energy released in millions of electron volts but in the case of massive stars nuclear fusion is followed by the carbon-nitrogen-oxygen cycle and helium can further transform into the carbon by triple alpha process and in the massive star much heavier elements can burn producing very large amount of energy than our sun and some of the massive star can produce luminosity 60000 times more than our sun
How many stars are there and why they shine?
Innumerable stars are there in the space. Our sun is also a star. Almost all stars shine because of fusion of hydrogen nuclei.
What is the difference between red and brown dwarf stars?
Red dwarf stars are massive enough to undergo nuclear fusion, so they would burn a long time before they run out of fuel. Brown dwarves are not massive enough for nuclear fusion, so almost all of its light come from the time when the brown dwarf was formed. Over a long period of time, a brown dwarf would cool down into a gas giant similar to Jupiter.
Is the lifespan of small stars are much slower or faster than a massive star?
Yes we can say, life span of small stars are slower than bigger one because in the small star the nuclear fusion takes place at the moderate rate but massive stars require large amount of energy and therefore nuclear fusion consume all it's fuel in short Time As compare to small stars also mechanism of nuclear fusion in both case followed by different ways
How do star use energy?
Stars fuse hydrogen through nuclear fusion into helium and release the massive resulting energy into space.
How does the sun glow?
The sun glows because it is emitting massive quantities of electromagnetic energy in optical wavelengths. Recall that the sun is a massive nuclear fusion engine, and all the fusion is being carried out in a super-hot environment. Light is one of the products of this fusion process, and the sun emits a massive amount of it. Those who study the sun and other stars call the fusion process stellar nucleosynthesis, in case you were wondering. A link can be found below for more information.
Are brown dwarf stars young or old?
They can be any age. A brown dwarf is a failed star, one that is not massive enough to start nuclear fusion. A brown dwarf may have formed recently, or could be almost as old as the universe itself.
