Cosmic Scale
Triangulum Galaxy
Spiral galaxy · 2.73 million light-years
How big is Triangulum Galaxy?
Triangulum Galaxy is about 61,100 light-years across.
See Triangulum Galaxy in 3D, at true scale
The Triangulum Galaxy is the third-largest member of the Local Group, after Andromeda and the Milky Way. It is a loose, open spiral full of bright star-forming regions.
At a glance
| Diameter | 61,100 light-years |
|---|---|
| Mass | 9.94 × 10⁴⁰ kg |
| Diameter compared with Earth | 4.5 × 10¹³ × Earth |
| Distance | 2.73 million light-years |
| Size | About 61,000 light-years |
| Stars | About 40 billion |
| Also known as | M33 |
Good to know
- From a very dark site it is one of the most distant things visible to the naked eye.
- It may be a satellite of Andromeda.
- It has no bulge at its centre and only a small black hole, if any.
- Next smaller: Sombrero Galaxy · 49,000 light-years
- Next larger: Whirlpool Galaxy · 76,900 light-years