SpazeBrightest star in the night sky
Sirius
The brightest star in our night sky, with a tiny white-dwarf companion, Sirius B, the size of Earth.
- Distance
- 8.6 light years
- Surface
- 9,667 °C
- Size
- 1.7 × the Sun
Outer layers
- H 73%
- He 25%
- O, C, Fe and heavier 2%
Glowing hydrogen plasma
Modelled from typical stellar abundances