Universe is getting 'hotter' as it gets older, a new research finds

universe is getting “hotter and hotter" as it gets older, scientists said in a study published on vember 11 in Astrophysical Journal after y examined rmal history of our universe. Ohio State University Center for Cosmology and AstroParticle Physics probed temperature of Universe over last 10 billion years and found that mean temperature of gas has increased more than 10 times and has hit alarming  2 million Kelvin or 4 million degrees Fahrenheit. 

research is based on work done by Jim Peebles, a 2019 bel Prize in Physics for his work on large-scale structure of universe. Peebles asserted that rising temperature of universe is due to fact that it changes over time, and as a result of galaxies and galaxy clusters movement. “Our new measurement provides a direct confirmation of seminal work by Jim Peebles— 2019 bel Laureate in Physics—who laid out ory of how large-scale structure forms in universe,” said Yi-Kuan Chiang, le author of study and a research fellow at Ohio State University Center for Cosmology and Astroparticle Physics. 

“As universe evolves, gravity pulls dark matter and gas in toger into galaxies and clusters of galaxies. drag is violent—so violent that more and more gas is shocked and heated up"—Yi-Kuan Chiang, le author of study said.

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'Violent' gravity pull heats universe

According to study, gravity that pulls dark matter and gas in toger into galaxies and clusters of galaxies is so violent that it shocks and heats up universe. Researchers conducted a study using a newly devised equipment that measured universe’s gas temperatures, which was compared with similar elements closer to Earth and present time. Using Planck and Sloan Digital Sky Survey, scientists collected properties of light data. Planck is European ncy mission, that operates in collaboration with NASA that stores details of light spectra from universe. 

Astrophysicists used technique of lengning redshift effect to estimate temperature of distant objects by estimating temperature from wavelength of lights. “We have measured temperatures throughout history of universe,” said Brice Ménard, a Johns Hopkins professor of physics and astromy. “As time has gone on, all those clusters of galaxies are getting hotter and hotter because ir gravity pulls more and more gas toward m.”

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