Looking at a distant galaxy means looking back in time.

In rather plain fashion, the smallest galaxies are called dwarfs while the largest are called giants. Our Milky Way Galaxy is one of three large galaxies in the Local Group of Galaxies.

NSF NOIRLab rings in the New Year with a glittering galaxyscape captured with the Department of Energy-fabricated Dark Energy ...

Credit: ESO/José Francisco Salgado, EHT Collaboration With respect to structure, there are three types of galaxies: spiral, ...