A new study by a team of physicists at Oxford showed that cosmic acceleration and dark energy don't exist. They challenged the evidence for supernovae through which Saul Perlmutter, Brian Schmidt, and Adam Riess received the Nobel Prize for discovering the accelerated expansion of the universe by observing distant supernovae.

Evidence of the expansion of the universe was provided by Saul Perlmutter and Brian Schmidt in 1998. They found that the light in 50 supernovae is dimmer than it was supposed to be. By this they proved that cosmic expansion is accelerating. After 13 years, in 2011 they received the Nobel Prize, for their discoveries. 

A new study by a team of physicists at Oxford showed that cosmic acceleration and dark energy don't exist. They challenged the evidence for supernovae through which Saul Perlmutter, Brian Schmidt, and Adam Riess received the Nobel Prize for discovering the accelerated expansion of the universe by observing distant supernovae.

This acceleration of the expansion of the Universe was accepted in science, but since 2015 other scientists have appeared who doubt this. Oxford University physicist Subir Sarkar and colleagues at the Niels Bohr Institute and the Paris Institute of Astrophysics have conducted a new study on the acceleration of the expansion of the universe, contesting the 1998 discoveries.

They have studied 740 supernovae since 2015 and concluded that they show "only marginally" cosmic acceleration, lacking a stable base. "If you look at supernovae in only a small part of the sky, it would look like you had cosmic acceleration," Sarkar says. "But we are saying that it is just a local effect, that we are non-Copernican observers. It has nothing to do with the overall dynamics of the universe and therefore nothing to do with dark energy.".

However, the Nobel laureates claimed that in their latest study, they observed 1,300 supernovae and claimed that the acceleration of the expansion of the Universe is clear. "The evidence for cosmic acceleration and dark energy is much broader than only the supernovae in the sample." said Riess.

Both studies are still being analyzed to see which of the teams is right.

More about this here.

Article by: Andacs Robert Eugen, on 29 January 2022, at 02:40 am Los Angeles time

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