A star. A system. A home.
A reference atlas of planets, major moons, and dwarf planets.
Sun
The star at the center of it all.
- Mean radius
- 695,700 km
- Gravity
- 274 m/s²
Mercury
Small world. Extreme conditions.
- Mean radius
- 2,440 km
- Gravity
- 3.7 m/s²
Venus
A world beneath the clouds.
- Mean radius
- 6,052 km
- Gravity
- 8.87 m/s²
Earth
Our only home. So far.
- Mean radius
- 6,371 km
- Gravity
- 9.81 m/s²
Moon
A familiar world. An extraordinary journey.
- Mean radius
- 1,737 km
- Gravity
- 1.62 m/s²
Mars
The next chapter is written in red.
- Mean radius
- 3,390 km
- Gravity
- 3.71 m/s²
Jupiter
A giant with a world of its own.
- Mean radius
- 69,911 km
- Gravity
- 24.79 m/s²
Saturn
An unmistakable silhouette.
- Mean radius
- 58,232 km
- Gravity
- 10.44 m/s²
Uranus
The planet that rolls around the Sun.
- Mean radius
- 25,362 km
- Gravity
- 8.69 m/s²
Neptune
At the edge of the planetary realm.
- Mean radius
- 24,622 km
- Gravity
- 11.15 m/s²
Pluto
Small world. A remarkable heart.
- Mean radius
- 1,188 km
- Gravity
- 0.62 m/s²
Ceres
The largest world in the asteroid belt.
- Mean radius
- 470 km
- Gravity
- 0.27 m/s²
Eris
A distant, icy frontier.
- Mean radius
- 1,163 km
- Gravity
- — m/s²
Io
A world of active volcanoes.
- Mean radius
- 1,822 km
- Gravity
- 1.8 m/s²
Europa
An ocean beneath the ice.
- Mean radius
- 1,561 km
- Gravity
- 1.32 m/s²
Ganymede
The largest moon in the Solar System.
- Mean radius
- 2,634 km
- Gravity
- 1.43 m/s²
Callisto
An ancient, cratered landscape.
- Mean radius
- 2,410 km
- Gravity
- 1.24 m/s²
Titan
Lakes and seas of liquid hydrocarbons.
- Mean radius
- 2,575 km
- Gravity
- 1.35 m/s²
Enceladus
An ocean world with icy plumes.
- Mean radius
- 252 km
- Gravity
- 0.11 m/s²
Triton
An icy moon in a backward orbit.
- Mean radius
- 1,353 km
- Gravity
- 0.78 m/s²
Haumea
A rapidly rotating, elongated world.
- Mean radius
- — km
- Gravity
- — m/s²
Makemake
An icy world beyond Neptune.
- Mean radius
- — km
- Gravity
- — m/s²