10K+

Black hole

UK //blæk hoʊl//US //blæk hoʊl//

Definition

A region in space with a gravitational pull so strong that even light cannot escape.

In simple words: A region in space where gravity is so strong that nothing can escape from it.

Examples

  • Scientists believe that the universe contains many black holes.
  • The black hole at the center of our galaxy is called Sagittarius A*.
  • Near a black hole, time behaves differently due to extreme gravity.
  • Astronomers use radio waves to study black holes that can't be seen directly.
  • In a black hole, the gravitational pull becomes infinitely strong.

Usage notes

Used in scientific contexts, often when discussing astrophysics or space phenomena; less appropriate in casual conversations unless in a relevant context.

Grammar pattern

standalone noun

Memory hint

Think of a 'hole' that 'swallows' everything around it, even light.

Collocations

  • supermassive black hole
  • stellar black hole
  • black hole merger

Synonyms

  • singularity
  • gravitational well
  • event horizon

Common mistakes

  • Confused with 'dark hole' which doesn't exist in astrophysics.
  • Mixing it up with 'wormhole', which is a different concept.
  • Assuming black holes are visible when they are not.