SpazePlanet
Mercury
The smallest planet and the closest to the Sun. A single day, sunrise to sunrise, lasts two of its years.
- Diameter
- 4,879 km
- Gravity
- 0.38 g
- Day
- 176 Earth days
- Year
- 88 Earth days
- Temperature
- −173 to 427 °C
- Moons
- None
Can we live on Mercury?
Air: O, Na. Not breathable: you’d need a suit and your own oxygen.
Gravity: 0.38 g. Someone who weighs 70 kg on Earth would weigh 26 kg there.
Temperature: −173 to 427 °C.
Ground: Thin exosphere over cratered rock with a huge iron core.
Atmosphere
- O
- Na
- H
- He
- K
Measured by MESSENGER