What do white dwarfs eventually become as they cool during the Degenerate Era?

Answer

Black dwarfs

White dwarfs glow faintly from residual heat but cool over trillions of years, eventually becoming cold, inert black dwarfs.

What do white dwarfs eventually become as they cool during the Degenerate Era?

#Videos

Could Life Survive Without a Star? - YouTube

Planets Without Stars – Hidden Worlds in the Galaxy - YouTube

existenceuniversestar