Month: July 2025

ANDROMEDA’S SATELLITE GALAXIES – Small galaxies that orbit Andromeda, such as M32 and M110.

ANDROMEDA’S DIAMETER – About 220,000 light-years, making it larger than the Milky Way.

HUBBLE’S DISCOVERY – Edwin Hubble determined Andromeda is a separate galaxy, confirming the universe contains many galaxies.

GALACTIC COLLISION – The predicted future merger of the Milky Way and Andromeda in about 4.5 billion years.

INTERGALACTIC DISTANCE – The space between galaxies, with Andromeda being the closest major galaxy to us.

SPIRAL GALAXY – A type of galaxy characterized by a central bulge and spiral arms, like Andromeda.

LOCAL GROUP – The cluster of galaxies that includes Andromeda, the Milky Way, and about 50 other galaxies.

ANDROMEDA GALAXY (M31) – The nearest spiral galaxy to the Milky Way, approximately 2.5 million light-years away.

GALACTIC WINDS – Outflows of gas driven by star formation and supernovae.