It turned out that the average temperature of gas in the Universe has increased 10 times in 10 billion years.To date, it has
"As the universe evolves, gravity combines dark matter and gas in space into galaxies and galaxy clusters, causingresistance and gas heating," explains Yi-Quan Chan, a research scientist at the Center for Cosmology and Particle Astronomy Physics at The Ohio State University.
Scientists have used a new method that allowedthey estimate the temperature of the gas in the distance of the Earth (i.e., even further back in time). The readings have been compared to temperatures closer to Earth (and at present). The results of the study confirmed that the universe is getting hotter over time due to the gravitational collapse of the cosmic structure, and it seems that the heating is only increasing.
To understand how the temperature of the universe changesover time, the researchers used data collected by two missions - Planck and Sloan Digital Sky Survey (Sloan Digital Sky Survey).
Planck is an astronomical satellite of the European Space Agency (ESA) designed to study variations in the cosmic microwave background (relic radiation).
Sloan Digital Sky Survey - Projectlarge-scale study of multispectral images and redshift spectra of stars and galaxies using the 2.5-meter wide-angle telescope at the Apache Point Observatory in New Mexico.
Scientists combined data from two missions and estimateddistances to hot gases nearby and in the distance using redshift measurements. Astrophysicists use it to estimate the age of distant space objects. ("Redshift" got its name from the nature of the lengthening of the wavelengths of light. The further something is in the universe, the longer the length).
Observed light from objects in deep spaceolder than their light closer to Earth. This fact, together with a method for estimating temperature from light, allowed researchers to measure the average temperature of gases in the early universe - which are far from Earth - and compare them with the average temperature of nearby space objects today.
The researchers found that gases near space objects closer to Earth reachThat's about 10 times the temperature of gases around objects farther away in time and distance.
According to Chang, the universe is heating up due to the natural process of galaxy formation and structures.This has nothing to do with warming the Earth.
Read also
The Doomsday glacier turned out to be more dangerous than scientists thought. We tell the main thing
Scientists discover two new mammals in Australia
Voluntary death. We tell how the euthanasia procedure works around the world