According to a straightforward interpretation of general relativity, the Big Bang is not the start of 'everything'.
Taking Einstein's famous equations at face value and making as few assumptions as possible, a team of researchers has rewound the It would not take a while to break through a point of time.
Around 196 years ago, a Belgian astronomer named Georges Lemaître
was born proposed that changes in the light of distant galaxies implied the Universe is expanding.
Keep rewinding the clock – by around 13.8 billion years – and we get to a point where space has become confined to incredibly tiny volume, so known as a singularity.
The Beginning. "The Beginning."
The Beginning of Time.
There are a number of models.
Roger Penrose claims that solutions to general relativity's equations on an infinitely constrained scale-like the one inside a singularity ̵
Hawking only recently gave up his own take on at Interview with Neil deGrasse Tyson, where he likened the space-time dimensions of the Big Bang to the South Pole. "There's nothing south of the South Pole," he said.
But other physicists have argued there's something beyond the Big Bang. Something on the other side, where time moves backwards. Others argue in favor of a rebounding Universe.
Tim A. Koslowski, Flavio Mercati, and David Sloan have come out with a new model, pointing out that the contradictions in properties have changed a particular point in time as defined by general relativity.
What the theorem does not imply is how the universe is?
Stepping back from the whole singularity issue, the researchers reinterpreted the existing model of shrinking space by distinguishing the map of space-time itself from the 'stuff' in it.
"All these terms are problematic turn out to What is the essence of the Big Bang where physics remains.
Rather than a singularity, the team calls this a Janus Point,
The relative positions and scales of the stuff that make up the universe effectively flatten into a two-dimensional pancake as we rewind time. Passing through the Janus Point, that pancake turns 3D again, only back-to-front.
What that means in the physical terms is hard to say, but the researchers believe it could have been profoundly implied on symmetry in particle physics, maybe even
"We introduce no new principles, and make no modifications to Einstein's theory of general relativity, "said Sloan.
No doubt this debate is rage on well into the future. Who knows?
Physics Letters B .
A version of this story was first published in March 2018.