Brightest nebula
- Who
- The Orion Nebula
- What
- 4 apparent magnitude
- Where
- United Kingdom
- When
- Not applicable
The Orion Nebula (M42 (Messier 42)) is the brightest nebula in the sky, with an apparent magnitude of 4. Located in the 'sword' of the constellation of Orion, the nebula is easily visible to the naked eye.