Not 13.7, however 26.7 billion years

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Technological innovation web site edited – 07/11/2023

age of the universe

For many years, astronomers and physicists have been calculating the age of our universe by measuring the time elapsed because the Huge Bang, primarily by two strategies: by the age of the oldest stars or by galaxies stagnating, primarily based on their redshift. ..

In 2021, because of new applied sciences and technological advances, the age of the universe was estimated to be 13.797 billion years, utilizing the Lambda-CDM concordance mannequin – the cosmological fixed, recognized at the moment as “darkish power”, and the CDM mannequin identify is an acronym in English for “chilly darkish matter”. “.

However then got here the James Webb House Telescope, which was supposed to point out us the primordial moments of the Universe, a couple of million years after the Huge Bang. The large query was: “What was the universe like in its early days?”

What we noticed was utterly sudden: the galaxies Webb noticed, current solely 300 million years or so after the Huge Bang, appeared to have a stage of maturity and mass that ought to have required billions of years of cosmic evolution. In different phrases, the traditional universe is similar to the present one. Furthermore, these galaxies are surprisingly small, which provides one other layer of thriller to the equation.

These sudden findings precipitated a basic uproar within the scientific neighborhood, however Professor Rajendra Gupta, of the College of Ottawa, Canada, thinks he has the reply: For Gupta, what’s occurring is that the universe is way older than science has calculated to this point.

“Our newly developed mannequin extends the formation time of galaxies by a number of billion years, giving the universe an age of 26.7 billion years, not 13.7 as beforehand estimated,” he stated.

Drained gentle principle

The idea of Professor Gupta’s reasoning is a principle from 1929, proposed by Bulgarian astronomer Fritz Zwicky (1898-1974), known as the “drained gentle principle”, which proposes that the impact of the redshift of sunshine isn’t because of the motions of galaxies, however to a phenomenon that might trigger them to lose Photons of power as they journey cosmic distances.

This principle has been put aside as a result of it doesn’t match many facets of commentary, such because the readability of photos of extra distant objects, which needs to be blurry in case you actually tire the sunshine, the thermal spectrum of the cosmic microwave background, the floor brightness of galaxies and the time enlargement of cosmic sources.

However Professor Gupta believes it’s attainable to revive the speculation, which might enable us to flee the presently accepted interpretation of redshift, which proposes that the wavelength of sunshine will increase (will get redder) because of the larger velocity of distant celestial our bodies, that are shifting away at growing speeds because of the enlargement of the universe. .

He suggests: “By permitting this principle to co-exist with the increasing universe, it turns into attainable to reinterpret the redshift as a hybrid phenomenon, not resulting from enlargement alone.”

coupling constants

Along with Zwicky’s drained principle of sunshine, Gupta relied on the thought of ​​growing “affiliation invariants,” a speculation pioneered by Paul Dirac (1902-1984). Conjugation constants are basic bodily constants that govern interactions between particles.

Based on Dirac, these constants could have various over time. By permitting them to evolve, the formation timeframe for the primary galaxies noticed by the Webb telescope at excessive redshifts may very well be prolonged from a couple of hundred million years to a number of billion years.

It will present a extra believable rationalization for the superior stage of growth and mass seen in these historic galaxies with the brand new area telescope.

Moreover, Gupta means that the standard interpretation of the cosmological fixed, which represents the darkish power answerable for the accelerating enlargement of the universe, wants revision. As a substitute, it proposes a continuing that explains the evolution of coupling constants. This modification of the cosmological mannequin will assist remedy the thriller of the small dimensions of galaxies noticed within the early universe by Webb.

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