Three physicists won this year’s Nobel Prize in physics Tuesday for discoveries related black holes.

The Royal Swedish Academy of Sciences said that Briton Roger Penrose will receive half of this year’s prize “for the discovery that black hole formation is a robust prediction of the general theory of relativity.”
Goran K. Hansson, the academy’s secretary-general, said German Reinhard Genzel and American Andrea Ghez will receive the second half of the prize “for the discovery of a supermassive compact object at the center of our galaxy.”
It is common for several scientists who worked in related fields to share the prize. Last year’s prize went to Canadian-born cosmologist James Peebles for theoretical work about the early moments after the Big Bang, and Swiss astronomers Michel Mayor and Didier Queloz for discovering a planet outside