'Perfect Fluid': Researchers reveal sound of the early universe, here's how it was created

A team of researchers at Massachusetts Institute of Techlogy (MIT) have beautifully re-created sound of early universe. Kwn as “Perfect Fluid”, it is product of sound waves sent through a carefully controlled gas of elementary particles. sound can be heard at following link: https://news.mit.edu/2020/sound-perfect-fluid-1203.

'Corse of neutron stars'

intriguing sound was created by getting sound flowing with smallest amount of friction allowed by laws of quantum mechanics. According to scientists, condition of “lowest friction” exist in “corse of neutron stars” and “soupy plasma,” that is believed to have existed in early universe. refore,  this sound perfectly recreates sound of early universe.

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"This recording is a product of a glissando of sound waves that team sent through a carefully controlled gas of elementary particles kwn as fermions. pitches that can be heard are particular frequencies at which gas resonates like a plucked string,” researchers described in a statement.

Speaking about same, Thomas A. Frank, Professor of physics at MIT, said that although "it is quite difficult to listen to a neutron star, people can mimic it in a lab using atoms, shake that atomic soup and listen to it, and kw-how a neutron star would sound.”

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Universe is getting hotter

Meanwhile, scientists said in a study published on vember 11 in Astrophysical Journal that universe is getting “hotter and hotter" as it gets older, 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. 

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