Chennai: While there has been varying data regarding the age of the universe, a recent study by a group of astronomers indicates that the galaxy might be atleast 13.77 billion years old.

Astronomers studying data from an array of telescopes in Chile’s Atacama Desert, have given out their observations, plus a bit of cosmic geometry, to suggest that the universe is 13.77 billion years old- give or take 40 million years.

Cornell University researcher co-authored one of two papers about the findings.
The new estimate, using data gathered at the National Science Foundation’s Atacama Cosmology Telescope (ACT), matches the one provided by the standard model of the universe, as well as measurements of the same light made by the European Space Agency’s Planck satellite, which measured remnants of the Big Bang from 2009 to ’13.

The lead author of “The Atacama Cosmology Telescope: A Measurement of the Cosmic Microwave Background Power Spectra at 98 and 150 GHz” is Steve Choi, NSF Astronomy and Astrophysics Postdoctoral Fellow at the Cornell Center for Astrophysics and Planetary Science, in the College of Arts and Sciences.

The research was published in the Journal of Cosmology and Astroparticle Physics.

In 2019, a research team measuring the movements of galaxies calculated that the universe is hundreds of millions of years younger than the Planck team predicted. That discrepancy suggested a new model for the universe might be needed and sparked concerns that one of the sets of measurements might be incorrect.

Simone Aiola, a researcher at the Flatiron Institute’s Center for Computational Astrophysics and first author of one of two papers, said, “Now we’ve come up with an answer where Planck and ACT agree. It speaks to the fact that these difficult measurements are reliable”.