The Hubble Constant is one of the most important concepts in astronomy.
Many different figures have been presented over the years, based on different data analyzes. A recent estimate based on data from the Hubble Space Telescope found the constant to be in the region of 74 kilometers per second per megaparsec.
Now that a new paper has been used, it is estimated that the number of megacarps is about 3.26 million light-years different technique to estimate the constant and slightly slower rate of expansion of 67.5 kilometers per second per megaparsec. The Extragalactic Background Light (EBL) is called the Extragalactic Background Light (EBL).
The scientists studied the rate of attenuation to figure out the gamma rays had traveled. If they were highly attenuated, they must have further, pointing faster expansion. If they were less attenuated, the expansion must be slower. They collected data using the Fermi Gamma-ray Space Telescope and Imaging Atmospheric Cherenkov Telescopes, like those in the Cherenkov Telescope Array pictured above.
"Cosmology is about the evolution of our universe ̵
The findings are published in the Astrophysical Journal.  Editors' Recommendations