"Everything scattered in the Andromeda system is very asymmetric and perturbed. It does appear that something significant ...

Blue Ghost was launched on January 15 aboard a SpaceX Falcon 9 rocket and entered lunar orbit on February 13. The lander is ...

NASA’s Hubble Space Telescope has identified 36 dwarf galaxies orbiting the Andromeda Galaxy. The images were compiled over ...

A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.

Hubble's latest survey of Andromeda reveals a chaotic past, a swarm of satellite galaxies, and a cosmic mystery that ...