white hole

Noun

Singular white hole

Plural white holes

1. A white hole is the opposite of a black hole. There is no physical proof it exists yet, though it could exist based on mathematical calculations. Matter, the stuff that our Universe is made of, comes out of the white hole instead of being sucked in like with the black hole.

   To explain what the matter swallowed by a black hole may become, certain scientists have imagined that there could be white holes through which matter would go out.

Related words

• black hole
• wormhole