Mars Facts: Distance, Size, Temperature & Moons

Planet #4 of 9 · 🪨 Rock-dominant (thin or no atmosphere)

The Red Planet, home to the solar system's tallest volcano and a thin, freezing atmosphere — Earth's best hope for human visitors.

How far is Mars from Earth?

Mars is 54.6 – 401 million km from Earth. This is a range rather than a fixed number because both Earth and Mars are constantly moving along their own orbits around the Sun, so the distance between them is always changing. Mars orbits at an average distance of 1.52 AU (227.9 million km) from the Sun, compared to Earth's 1 AU (149.6 million km).

Key facts about Mars

Atmosphere

95% CO2, very thin

Did you know?

✨ Olympus Mons on Mars is roughly 2.5x taller than Mount Everest.