| What exactly is a star?
How does a star form?
To many people, a star is simply one of many bright glowing lights in the sky at night. In reality, stars are much more complex.
A star is actually a self-luminous celestial body consisting of a mass of gas that is held together by its own gravity.
The glowing light typically seen from Earth is caused by actual nuclear reactions occurring within the stars core.
These nuclear reactions are balanced by the outflow of energy to the surface of the star, which produces the glow we so commonly associate with stars here on Earth.
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