This makes galaxy clusters glow brightly at those wavelengths as one of the brightest sources of X-rays on the sky. In 2019 German and Russian research groups collaborated to launch a new X-ray ...
In many parts of the world, especially those most densely populated, it's becoming increasingly difficult to be able to view the galaxy surrounding ... International Dark-Sky Association (IDA ...
This was the birth of our modern universe of galaxies, so poetically celebrated in Seeing in the Dark. Today, astronomers have measured the distance to the Andromeda Galaxy much more precisely ...