The universe is constantly expanding, and the pace of this process is determined by the Hubble constant. In order to determine its value, scientists led Prof. Wendy Friedman split into two teams. They then conducted their research using a variety of methods and approaches. What were the results?
The first method focuses on the remaining light from the Big Bang. It was measured in space and on Earth using telescopes. The result obtained is allowed to be determined The Hubble constant of 67.4 km per second per megaparsec (km / s / Mpc).
The second approach was different. Here, stars in the nearby universe were looked at. Then the velocity of their receding was measured. In this case, the Hubble constant was calculated At a speed of 72 km/sec/million pieces. So the difference is visible to the naked eye.
But then new research was conducted on other types of stars. This caused the Hubble constant to be calculated at 69.8 km/s/million pieces. Thus this is a value closer to that obtained in the first scenario of microwave background radiation. what does that mean? Scientists are getting close to setting a specific value for the constant expansion speed of the universe. However, more research will be needed to confirm this.
Scientists hope to obtain more accurate values. It will be possible to obtain it after the launch of the James Webb Space Telescope.