SpazeSub-Neptune, 32 light years away, GJ 436
GJ 436 b
A sub-neptune 32 light years away that circles its star every 2.6 days. Found in 2004.
- Distance
- 31.8 light years
- Year
- 2.6 days
- Size
- 4.2 × Earth
- Temperature
- 413 °C
- Mass
- 22.1 × Earth
- Found
- 2004, W. M. Keck Observatory
Can we live on GJ 436 b?
Air: H₂, He. Not breathable: you’d need a suit and your own oxygen.
Gravity: 1.27 g. Someone who weighs 70 kg on Earth would weigh 89 kg there.
Temperature: 413 °C on average.
Clouds: Trails a giant cloud of hydrogen like a comet.
Atmosphere
- H₂
- He
- CO
- CO₂
- H (escaping)
Measured by Hubble, Spitzer