SpazeMoon of Neptune
Proteus
About as large as a body can be without gravity pulling it round. Voyager 2 found it in 1989.
- Diameter
- 420 km
- Gravity
- 0.007 g
- Orbit
- 26.9 hours
- From Neptune
- 117,647 km
Can we live on Proteus?
Air: none to speak of. You’d live in sealed, pressurised habitats.
Gravity: 0.01 g. Someone who weighs 70 kg on Earth would weigh 0 kg there.
Ground: Dark, sooty ice.
Atmosphere
- None to speak of
Measured by NASA