Pinwheel Galaxy
M101
📋 A written introduction is coming — for now this page shows official values only.
Object
- Type (NASA)
- Spiral Galaxy
- Distance from Earth
- 25,000,000 light-years
- Apparent magnitude
- 7.9 mag
- Apparent size
- 27 ′
- NASA description
- Messier 101 is a classic, face-on, pinwheel spiral galaxy.
Source:NASA Hubble (Messier/Caldwell catalogs) · checked 2026-11-02 ↗NASA HEASARC (Goddard Space Flight Center) · checked 2026-11-02 ↗
Related
Constellation
In everyday life
- Light from this object takes about 25,000,000 years to reach Earth — the light you see tonight left 25,000,000 years ago (official distance ÷ speed of light).
- At magnitude 7.9 it is fainter than the naked-eye limit (about 6) — you need binoculars or a telescope.
- It spans about 27′ of sky — about the same as the full Moon's 31′.