‘Cosmic fossils’ left by black holes created before the big bang may still shape the universe

We all know it all started when the Big Bang exploded our universe into reality, right? Well, not necessarily.

A compelling new theory of the creation of our universe suggests that it may not have started out as just the violent seizure we’re all familiar with, but instead that the big bang was actually the rebound of an earlier contraction.

This earlier massive gravitational collapse would have effectively condensed the old galactic universe into a negligible nugget, known as the singularity, that is extremely small, enormously hot and extremely dense, much smaller than an atom.

A team of scientists from the Institute of Cosmology and Gravity at the University of Portsmouth in the UK and the Institute of Space Science in Barcelona have suggested that this potential collapse could have sucked in almost everything when it occurred, but left some ancient black holes that have survived to the present day as “cosmic fossils”.

Research published in the journal Physical Examination D, The hypothesis is that when the big bang exploded and created the rapidly expanding universe we all know and love, these remaining black holes then became part of the fabric of our universe.

“If this theory is correct, these primitive space objects could help explain many long-standing mysteries in cosmology, including the nature of dark matter and the processes that seed the formation of galaxies,” the team said.

this theory The universe created by the recoil is tentatively called the “black hole universe.”

Professor Enrique Gaztañaga, lead author of the study, said: “For almost a century, cosmologists have traced the history of the universe to a single dramatic moment known as the big bang. In the standard picture, space and time emerged from an extremely hot, dense state about 13.8 billion years ago, followed by billions of years of cosmic expansion and galaxy formation.”

“This model has been highly successful. It explains the cosmic microwave background (weak radiation left over from the early universe) and accurately predicts how galaxies are distributed over large cosmic distances.”

“But some of the deepest mysteries in physics remain unsolved. We still don’t know what triggered the big bang, why the universe began in such a special state, what caused the brief burst of rapid expansion known as inflation, or what the invisible ‘dark matter’ that outweighs ordinary matter by about five times is.”

He added: “Our research explores a possibility that could tie together several of these puzzles: The universe may not have started with a single explosion, but instead emerged from a cosmic bounce that mimicked inflation, and some of the oldest objects in the universe have potentially survived as remnants of their predecessors.”

The team believes that in this theoretical scenario, some black holes may have formed in the early cosmic stage and then escaped from the bounce, leaving behind residual objects that could still affect the structure of galaxies billions of years later.

Other black holes may have formed shortly after the jump; This may occur due to “heightened density fluctuations” that occur when matter in the early universe is unevenly distributed into stronger, “more distinct clusters than normal.”

“These clumps of material will collapse more easily under their own gravity, making it more likely that large cosmic structures (and black holes) will form early,” the team said.

One of the major frustrations physicists have today with Einstein’s theory of general relativity concerns singularities (the points at the center of black holes or the point where the big bang erupted).

This is because they represent a collapse of the theory itself. It fails to explain how density becomes infinite and the known laws of physics break down. Many physicists therefore interpret this as a sign that our current description of the first moments of the universe is incomplete.

The new theory suggests that instead of collapsing into an infinite singularity, which is a problematic theory, the universe will collapse to a very high but finite density before reversing this motion with an explosive expansion.

Professor Gaztañaga added: “Singularities often signal that our theoretical explanation has reached its limits. A jump provides a way for the universe to move from contraction to expansion without requiring new exotic physics.”

More importantly, the team’s calculations suggest that “compact objects larger than about 90 meters could undergo the transition and reemerge as earlier fossils in the expanding Universe.”

Besides black holes, other possible remnants include gravitational waves and density fluctuations, they said.

Professor Gaztañaga said: “These remnant black holes could help explain dark matter, the invisible matter that shapes galaxies, and the large-scale structure of the universe. If large numbers were formed during the bounce, they could constitute a significant fraction, or potentially even all, of dark matter.” he said.

“If massive black holes had already existed immediately after the jump, the early universe would not have had to start from scratch when building the first galaxies,” he added.

The team proposed tests that could help determine whether the theory is valid or whether there are gaps in the theory. These include astronomers who have identified residual gravitational waves from a previous cosmic phase, or “subtle patterns in the cosmic microwave background that preserve traces of the universe before the big bang,” they said.

Professor Gaztañaga added: “If the universe experienced a leapfrog, the dark structures shaping galaxies today may be remnants of a cosmic age before the big bang.”