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

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

Multiple planets are going to appear together in the sky. Some astronomy fans are calling it a “planet parade.” There won’t ...

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

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

We have a target-rich environment for skywatchers right now,” Val Szwarc said. Indeed, this coming “dark, new-moon” weekend ...