Observable universe: how big is it?
Observable universe is about 93 billion light-years. In everyday terms, that is ≈ 930,000 Milky Ways.
- Size
- 93 billion light-years
- In metres
- 8.80 × 10²⁶ m
- Everyday comparison
- ≈ 930,000 Milky Ways
- Chapter
- The Cosmic Web
Did you know?
Everything we could ever see — about 93 billion light-years across. Light from beyond hasn't had time to reach us yet.
How it compares
- About 180× bigger than Laniakea Supercluster (518 million light-years).
Other things of a similar size
- Andromeda Galaxy 220,000 light-years
- Distance to Andromeda 2.54 million light-years
- Local Group 10 million light-years
- Virgo Cluster 14.8 million light-years
- Boötes Void 328 million light-years
- Laniakea Supercluster 518 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.