Andromeda Galaxy: how big is it?
Andromeda Galaxy is about 220,000 light-years. In everyday terms, that is ≈ 2.2 Milky Ways.
- Size
- 220,000 light-years
- In metres
- 2.08 × 10²¹ m
- Everyday comparison
- ≈ 2.2 Milky Ways
- Chapter
- Galaxies
Did you know?
Our nearest big neighbour, with about a trillion stars. It's heading our way and may collide with the Milky Way in a few billion years.
How it compares
- About 2.2× bigger than Milky Way (100,000 light-years).
- About 12× smaller than Distance to Andromeda (2.54 million light-years).
Other things of a similar size
- Omega Centauri 150 light-years
- Large Magellanic Cloud 31,700 light-years
- Milky Way 100,000 light-years
- Distance to Andromeda 2.54 million light-years
- Local Group 10 million light-years
- Virgo Cluster 14.8 million light-years
Sizes are rounded, typical values drawn from standard reference sources, including NIST/CODATA physical constants and NASA's planetary fact sheets. Real objects vary; see About for how sizes are chosen.