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2020 Nobel Prize in Physics
Why is it in News?
- Three scientists won Nobel Prize in Physics for black holes.
Details:
- Discovery:
(1) The formation of black holes was possible, based heavily on Albert Einstein’s general theory of relativity.
(2) There was “an extremely heavy, invisible object that pulls on the jumble of stars, causing them to rush around at dizzying speeds.”
- Black Holes:
(1) A black hole is a place in space where gravity pulls so much that even light cannot get out.
(2) The gravity is so strong because matter has been squeezed into a tiny space.
(3) This can happen when a star is dying.
(4) On 11 February 2016, the LIGO Scientific Collaboration and the Virgo collaboration announced the first direct detection of gravitational waves, which also represented the first observation of a black hole merger.
- How did we locate black holes?
(1) When a black hole and a star are close together, high-energy light is made.
(2) This kind of light cannot be seen with human eyes.
(3) Scientists use satellites and telescopes in space to see the high-energy light.