Why does the Perseus galaxy cluster shine so strangely in one specific color of X-rays?
The Hubble Space Telescope peers into the distant universe to reveal a galaxy cluster called Abell 2537.
MCG+01-38-005 (below) is a special kind of megamaser; the galaxy’s active galactic nucleus pumps out huge amounts of energy, stimulating clouds of surrounding water.
Dwarf galaxy NGC 5949 sits at a distance of around 44 million light-years from us, placing it within the Milky Way’s cosmic neighborhood.
Most galaxies don’t have any rings — why does this galaxy have two?
Tucked away in the small northern constellation of Canes Venatici (The Hunting Dogs) is the galaxy NGC 4242.
A bright spiral galaxy of the northern sky,