Milky Way · Solar System
Planet Explorer
Touch a planet — anywhere in orbit or in the grid — and get its quick facts instantly.
Earth
The pale blue dot
- Type
- Terrestrial
- Distance from Sun
- 1 AU
- Diameter
- 12,742 km
- Mass
- 1 × Earth
- Surface gravity
- 9.81 m/s²
- Day length
- 24 hours
- Year length
- 365.25 days
- Moons
- 1
- Average temperature
- 15 °C
- Composition
- Iron-nickel core, silicate mantle, nitrogen-oxygen atmosphere
All eight planets
Planet challenge
Test your orbit knowledge
Five quick questions from the planet facts.
Question 1 of 50 correct so far
Which planet is closest to the Sun?
Beyond our Sun
The Milky Way holds billions of planets. Here are a few of the most notable worlds found around other stars.
Proxima Centauri b
4.2 light-years away, orbiting the nearest star to the Sun.
TRAPPIST-1 e
One of seven Earth-sized worlds around a single cool red dwarf.
Kepler-452b
A super-Earth in the habitable zone of a Sun-like star.
WASP-12b
A hot Jupiter being slowly devoured by its own star.