🌍 Exoplanet
Proxima Centauri b
The closest known planet outside our solar system.
- Size
- about the same width as Earth
- A year lasts
- 11.2 Earth days
- Estimated temperature
- −55 °C
- Distance
- 4.2 light-years away
- Discovered
- 2016
Did you know?
- Even at the speed of light, getting there would take more than four years.
- Its size is an estimate: it has never been seen crossing its star.
The latest numbers from NASASize, year, temperature and how it was found, in the app
Find it in the sky
Compare Proxima Centauri b with EarthSide by side, to scale, in the app
More NASA photos of Proxima Centauri bStraight from NASA’s image library, in the app
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