Black holes are dense objects with extreme gravity that trap light. White dwarfs are the cooled remnants of old stars, and red giants are large, cooling stars.
Black holes are extremely dense objects formed from the collapse of massive stars, with gravity so strong that not even light can escape. White dwarfs are remnants of old stars that have cooled down and are very dense. Red giants are old, large stars that are cooling down and becoming denser.
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