SpazeTemperate rocky planet, 4 light years away, Proxima Centauri
Proxima Centauri d
A temperate rocky planet 4 light years away that circles its star every 5.1 days. Found in 2025.
- Distance
- 4.2 light years
- Year
- 5.1 days
- Size
- 0.7 × Earth
- Temperature
- 9 °C
- Mass
- 0.3 × Earth
- Found
- 2025, La Silla Observatory
Can we live on Proxima Centauri d?
Air: N₂, CO₂. Not breathable: you’d need a suit and your own oxygen.
Gravity: 0.54 g. Someone who weighs 70 kg on Earth would weigh 38 kg there.
Temperature: 9 °C on average.
Ground: Rock, possibly with water; atmosphere not yet measured.
Atmosphere
- N₂
- CO₂
- H₂O
Not measured yet: modelled from its size and temperature