Apr 09, 2021 20:00:00

Claim that there is a 'mirror universe' where time flows backwards

The idea that there is a universe 'parallel world ' that is different from the universe in which we live has existed for a long time, but in recent years, the ' mirror universe ' has been attracting attention as one of the parallel worlds. Guardian Magazine , a scientific media, explains the Miller Universe, where time and everything exists in the opposite direction to our world, centered on the Big Bang.

Some Physicists Believe there's a'Mirror Universe' in which Time moves Backwards
https://www.guardianmag.press/2021/04/some-physicists-believe-theres-mirror.html

Why some physicists really think there's a'mirror universe' hiding in space-time | Live Science
https://www.livescience.com/truth-behind-nasa-mirror-parallel-universe.html

In May 2020, the news that 'NASA scientists detected a parallel universe' was reported on the Daily Star and NEW YORK POST , and received a lot of attention. The news stems from NASA's Antarctic Impulsive Transient Antenna (ANITA), which observed a strange phenomenon that researchers did not anticipate.

ANITA is an antenna developed to investigate low-energy elementary particles and neutrinos. It is thought that neutrinos are constantly pouring down from space, and ANITA originally detects neutrinos that have come down from space, but NASA reports that new 'neutrinos flying from the earth to space' are detected. It was said that it was done. Daily Star, who reported the news, claimed that this elementary particle called 'tau neutrino', which moves in the opposite direction, 'moves backward in time, suggesting evidence of a parallel universe.' ..

The news was later pointed out that 'the facts have been significantly exaggerated.' The detection of tau neutrinos may be due to some anomaly, and no peer-reviewed papers have been published at the time of writing.

However, the hypothesis itself that there is a 'mirror universe' that has a mirror relationship with the universe in which human beings exist is not really new.

In 2021, the 'Λ-CDM model (Lambda-Cold Dark Matter model) ' has become the mainstream for the origin of the universe. The Λ-CDM model regards the origin of the universe as a big bang and thinks that the universe is expanding over time. Therefore, when the existing universe is reversed, the universe contracts and reaches one point about 13.8 billion years ago.

But here comes the question. The Λ-CDM model 'expands the universe from the Big Bang in the direction of time', but physics has a law called

CPT symmetry. Considering the CPT symmetry, we have to think about the universe in the opposite direction centering on the Big Bang. In other words, on the other side of the Big Bang, there is space-time, which is the opposite of the universe in which we humans exist.

This 'another universe' is like a mirror image of our universe, and when viewed from our universe, it looks like time is going backwards. However, from the perspective of the other universe, our universe is a mirror image, so it looks like our universe is 'backward in time.'

The tau neutrinos observed at ANITA were thought to be 'moving backwards in time', so they were considered to be evidence of another mirror image, the Mirror Universe. This is speculative and not scientifically proven, but in 2018 a research team at Oxford University published a treatise on the 'opposite universe.' This theory does not deny the general theory of relativity and the Big Bang, but solves the dilemma at the beginning of the universe by reconsidering existing models.

Of course, testing these hypotheses is considered impossible in current science. However, the idea that the universe is not single is not limited to the above, and Roger Penrose, who won the 2020 Nobel Prize in Physics, said, 'There was another universe before the Big Bang.' I'm speaking.

What is the 'universe before the Big Bang' that the 2020 Nobel Prize in Physics talks about? --GIGAZINE