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NOBEL PRIZE 2019 FOR PHYSICS

Written by Talent KAS

Related Topics: Awards & Honours, Science & Technology

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  • The Nobel Prize in Physics 2019 was awarded “for contributions to our understanding of the evolution of the universe and Earth’s place in the cosmos”.
  • Peebles, of Princeton University in the United States, was awarded half the 9-million-Swedish-crown ($910,000) prize while Mayor and Queloz, from the University of Geneva in Switzerland, shared the other half.

The Nobel Winners

  • James Peebles – for theoretical discoveries in physical cosmology
  • Michel Mayor and Didier Queloz – for discovering an exoplanet orbiting a solar-type star.

Award Winning Discovery

  • Peebles was awarded for his theory on what happened after the Big Bang took place nearly 14 billion years ago.
  • The Big Bang model describes the universe from its very first moments, almost 14 billion years ago, when it was extremely hot and dense.
  • Since then, the universe has been expanding, becoming larger and colder.
  • 400,000 years after the Big Bang, the universe had become transparent and light rays were able to travel through space.
  • Even today, this ancient radiation is all around and, coded into it, many of the universe’s secrets are hiding.
  • Using his theoretical tools and calculations developed since the mid-1960s, James Peebles was able to interpret these traces from the infancy of the universe and discover new physical processes.
  • Peebles’ results showed a universe to humanity in which just five per cent of the content was known.
  • Finding out the mysteries behind the remaining 95 per cent was a challenge to modern physics.
  • In October 1995, Michel Mayor and Didier Queloz had announced the first discovery of a planet outside the solar system.
  • The discovery of the planet ‘51 Pegasi b’ from the Haute-Provence Observatory in southern France, started a revolution in astronomy and over 4,000 exoplanets have since been found in the Milky Way’.
[Source: The Hindu]

 

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