Because light is formed during nuclear fission and eventually escapes through the photosphere.
What is the Sun's structure?
Photosphere, convection zone, radiation zone, and core.
How does nuclear fusion occur in the Sun?
Under extreme temperatures and pressure, hydrogen atoms are forced together to create helium.
How does the energy from fusion get out of the Sun?
In the form of light and heat.
What is nuclear fission?
A nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy.
Are neutrinos formed in nuclear fusion?
Yes.
Are photons created in nuclear fusion?
Yes.
Does the Sun have the same temperature throughout?
No.
Which element is created in the Sun?
Helium.
What fraction of mass is converted into energy in the Sun's core?
0.7 %
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