Mars

Mars — planet, shown live in Cosmoscope, a real-time 3D map of the universe.

A cold desert world with the solar system’s tallest volcano and a canyon that would stretch across the United States. Billions of years ago, rivers ran here — their dry beds are still visible.

Radius
3,390 km
Mass
6.42 × 10²³ kg
Gravity
3.71 m/s²
Day
24 h 37 m
Year
687 Earth days
Mean temp
−63 °C
Moons
2
Semi-major axis
1.52 AU

Seeing Mars in real time

Cosmoscope puts Mars at its true position in the solar system, computed from JPL-derived ephemeris and updated continuously. Open the live 3D view to see, in real time, how far Mars is from the Sun and from Earth right now, how many minutes or hours light takes to cross that gap, and how fast it is moving along its orbit. Scrub the timeline to place Mars where it was on any past date, or where it will be years from now.

Interactive universe A living map of the solar system
Interactive universe
Waking the solar system…