Sirius B
white dwarf
8.6 light-years from Earth
The exposed core of a dead star, about the size of Earth but as massive as the Sun. A teaspoon of it would weigh several tonnes.
- surface 25,000 K · slowly cooling for billions of years
- kind
- star
- size
- 11,700 km across
- with
- Sirius
More stars & stellar remnants
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- Tau Ceti nearby Sun-like star
- Barnard's Star red dwarf
- Altair rapidly rotating A star
- Alpha Centauri nearest Sun-like star
- Proxima Centauri red dwarf
- Vega fast-spinning A star seen pole-on
- Arcturus orange giant