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The Sun is still extremely hot, whereas the planets are much cooler. Which of the answers gives the correct explanation?
The Sun burns hydrogen in its interior, whereas the planets supply of hydrogen has run out.
The Sun fuses hydrogen to helium, releasing energy, whereas the planets supply of hydrogen is less.
The Sun produces energy by fission reactions, whereas the planets were never hot enough to produce energy this way.
It is too cold deep inside the planets to have fusion reactions necessary to produce energy from hydrogen.
Most planets contain very little hydrogen, but where there is large amounts present; such as in Jupiter, the temperature is not high enough to initiate and sustain nuclear reactions.
By: Shubham Tiwari ProfileResourcesReport error
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