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The force that governs the cosmos reshapes its shape and heats more and more areas.
When you leave a hot object, over time it cools down to room temperature. Astrophysicists expect that a similar fate will eventually affect our universe, gradually cooling to near absolute zero. However, this will happen for trillions and trillions of years. So far the exact opposite is happening.
This was indicated by a new study published in the scientific journal Astrophysical Journal. He found that the average space gas temperature had risen about tenfold over the past billion years. According to physicists, the cause is gravity.
Advanced analysis
Researchers led by astrophysicists at US State University in Ohio have used a new method that allows them to estimate the temperature of an extremely distant cosmic gas.
The gas we see billions of light years away allows us to look back in time. And until the time of the first evolution of the cosmos. The captured and studied light only reached Earth after traveling through space after billions of years.
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The researchers relied specifically on observations from the Planck satellite and Sloan’s digital sky survey (SDSS). They combined data from both sources – a total of eight maps of a more or less distant cosmos – and analyzed light spectra to get an idea of the distances and temperatures found in the accumulation of gas.
They then compared the temperature of an extremely distant, and therefore ancient, gas with a gas closer to Earth. Thus, they found that cosmic gas was gradually warming up.
Nobelist confirmation
Cosmic gas around the Earth and our galaxy reaches an average temperature of two million degrees Celsius. However, at distances of 10 billion light years, they found that the temperature was on average 10 times lower.
Thus, the average space gas temperature was ten times lower ten billion years ago.
“Our new measurements are a direct confirmation of the significant work of Jim Peebles, who was awarded the Nobel Prize in Physics in 2019 for his theory of the origin and evolution of large space structures,” said the author. research principal Yi-Kuan Chiang.
Photo gallery
The structure of the cosmos resembles a spider’s web, the fibers and nodes of which are thickened and heated by the gravitational accumulation of gas from the wider environment.
Source: NASA
The structure of the universe refers to the gravity-induced grouping of “normal” and dark matter into galaxies, galactic clusters and even larger formations.
“As the universe evolves, gravity attracts and accumulates dark matter and gas in galaxies and galactic clusters. This clustering is happening so fast, so fast that more and more gas is being compressed together and heated,” explains Yi-Kuan Chiang .
Nothing to do with global warming
“The universe is warming due to the natural processes of forming larger galaxies and larger cosmic structures. However, it has nothing to do with global warming,” warns Yi-Kuan Chiang, adding: “These phenomena are they occur on completely different time scales. “
The American physicist predicts that the warming trend will likely continue over the next billion years. How long will it take and when will the cooling prevail are questions that remain unanswered for the moment.
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