Cosmic Scale
The Sun vs Sirius: size comparison
Sirius is about 1.71 times wider than The Sun: 2,381,000 km across against 1,391,000 km.
Compare them in 3D, at true scale
| The Sun | Sirius | |
|---|---|---|
| Diameter | 1,391,000 km | 2,381,000 km |
| Mass | 1.99 × 10³⁰ kg | 4.10 × 10³⁰ kg |
| Light crosses it in | 4.64 seconds | 7.94 seconds |
- Sirius has about 5.0 times the volume of The Sun.
- Sirius is about 2.1 times more massive than The Sun.
- Light takes 7.94 seconds to cross Sirius, and 4.64 seconds to cross The Sun.
The Sun: Holds 99.86% of all the mass in the Solar System.
Sirius: The brightest star in the night sky.