Question

What are white dwarf stars and how do they form?

Answer 1

White dwarfs are stars that have burned up all of the hydrogen they once used as nuclear fuel. Fusion in a star's core produces heat and outward pressure, but this pressure is kept in balance by the inward push of gravity generated by a star's mass

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Answer 2

Answer:

In simple terms it is a star which has collapsed after exhausting its hydrogen. It is extremely dense with powerful gravity. The nearest known white dwarf is Sirius B.

Explanation: