(ORDO NEWS) — From an observatory high in the mountains of the Chilean Atacama Desert, astronomers have made new observations of the oldest light in the universe.
These observations, together with elements of space geometry, show that the universe is 13.77 billion years old – plus minus 40 million years. A researcher at Cornell University, USA, Steve Choi is the lead author of one of two studies that helped solve a long-standing problem with determining the age of our world.
This new estimate, using data from the National Science Foundation’s Atacama Cosmology Telescope (ACT), is in good agreement with the Standard Model Universe estimate, as well as the Planck satellite measurements of the same ancient radiation. (“Planck”) of the European Space Agency between 2009 and 2013.
In 2019, one research group, based on measurements of displacements of galaxies, calculated that the age of the universe should in fact be several hundred billion years less than predicted by scientific Planck mission team. This discrepancy prompted the conclusion that either the original model of the universe was incorrect, or one of the research teams that estimated this age was making a mistake.
“Now we have the answer – the measurements made with the Planck mission and the ACT telescope are in good agreement,” said Simone Aiola, lead author of the second of these two scientific papers, of the Center for Computational Astrophysics of the Flatiron Institute, USA. “This means that the two sophisticated methods of calculating the age of our world converge very accurately to the same value – and this can hardly be an accident.”
The study is published in the Journal of Cosmology and Astroparticle Physics.
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