Browsing: Supermassive Black Holes

The galaxy cluster in the Hubble Deep Field (HDF) is one of the most distant…

Galaxies are vast collections of stars, gas, and dust held together by gravity. They come…

The Chandra X-ray Observatory is a space telescope launched by NASA in 1999 to study…

Spiral galaxies are one of the most common types of galaxies in the universe. They…