Our Universe Is ‘Bruised’ At The Edges Where It Collides With OTHER Universes Say Physicists

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EVIDENCE that we are living as part of a multiverse is beginning to mount with several physicists believing that they have proof that our universe collided with another.

Several pieces of evidence have emerged over the years to suggest that the universe that we reside in is not alone, and that there could in fact be billions.

Some say that our universe is even colliding with others.

In 2010, Stephen Feeney at University College London and colleagues announced they had discovered patterns in the map of the cosmic microwave background (CMB) – the leftover radiation from the Big Bang – that suggested that our universe had been left ‘bruised’ by colliding with other universes.

In fact, the team found four bruises, implying that our universe had collided with another several times in the past. He said: “It is rather easy to find all sorts of statistically unlikely properties in a large dataset like the CMB.”

Patterns in the CMB that suggest we are part of a multiverse. University of London

Ranga-Ram Chary, a researcher at Planck's US data center in California, analysed the CMB a few years later, and he too found evidence of bruising, and suggested that our universe hit another much bigger than ours.
He wrote in a study: "It could… possibly be due to the collision of our universe with an alternate universe whose baryon to photon ratio is a factor of around 65 larger than ours.”
Then, earlier this year, physicists found what could potentially be the most compelling evidence that the universe we inhabit is not the only one. Experts hoped that they had solid evidence of this long-standing theory after finding a cold spot in the deep universe.

The cold spot was first discovered in 2015 and is a 1.8 billion light-year-wide area where there are an estimated 10,000 galaxies ‘missing’. 

The mysterious area contains 20 per cent less matter than it should, according to the Standard Model, which left scientists baffled. Experts from Durham University said in a paper that as a parallel universe crashed into ours, much of the galaxies and matter were shoved away from the cold spot.
Professor Tom Shanks in Durham University's Center for Extra-galactic Astronomy said: “One explanation for the Cold Spot is that it might be the remnant signal of the collision of our universe and one of the trillions of others.”
However, other experts are not convinced by the multiverse idea, and even suggest that as there is no real way to ever prove it, there is not much point in debating it. Carlo Rovelli of the Center for Theoretical Physics in Luminy, France, told the Smithsonian Magazine: “It is easy to write theories. It is hard to write theories that survive the proof of reality.
“Few survive. By means of this filter, we have been able to develop modern science, a technological society, to cure illness, to feed billions. All this works thanks to a simple idea: Do not trust your fancies. Keep only the ideas that can be tested. If we stop doing so, we go back to the style of thinking of the Middle Ages.”
Updated: 11 Oct, 2017
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