New research shows that the universe is getting hotter.
The temperature of the universe keeps rising
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Scientists have looked at the thermal history of the universe over the past 10 billion years. They found that the average gas temperature increased more than 10 times during this time and reached approx. 270 million OC. The research results have been published in the “Astrophysical Journal”.
“Our new measurement is a direct confirmation of the groundbreaking work of Jim Peebles, the 2019 Nobel Prize laureate in physics. He presented the theory of the formation of large-scale structures in the universe,” said Yi-Kuan Chiang, lead author of the study at the Ohio University’s Center for AstroParametric Cosmology and Physics .
The term large-scale structures of the universe refers to the global patterns of galaxies and galaxy clusters at scales that go beyond single galaxies. They are formed as a result of the gravitational collapse of dark matter and gas.
– As the universe evolves, gravity pulls dark matter and gas in space together into galaxies and galaxy clusters. The phenomenon is so violent that more and more gas is shocked and heats up, Chiang said.
Scientists used a new method that allowed them to estimate the temperature of the gas away from Earth. It has been found that the universe is getting hotter and this trend is likely to continue.
To understand how the temperature of the Universe has changed over time, scientists used light data from all over space collected by two missions, Planck and the Sloan Digital Sky Survey. Planck is an ESA mission that works in conjunction with NASA; and Sloan collects detailed images and spectra of light from space.
Data from these two missions were combined and distances of hot gases in the vicinity were assessed by measuring the redshift that astrophysicists use to estimate the cosmic age of celestial bodies.
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