ESS
Grade-9
Easy

Question

What happens when a white dwarf cools completely?

  1. It stops radiating light and turn into a black dwarf.
  2. It stops producing light and turn into a neutron star.
  3. It stops radiating light and turn into a black hole.
  4. It stops releasing light and turn into a red hole.

hintHint:

Over a very long time, a white dwarf will cool and its material will begin to crystallize, starting with the core.

The correct answer is: It stops radiating light and turn into a black dwarf.


    • Eventually over tens or even hundreds of billions of year a white dwarf cools until it becomes a black dwarf, which emits no energy

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