Moon

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

Born from a planet-sized impact 4.5 billion years ago, the Moon stabilizes Earth’s tilt and raises its tides. It always shows us the same face — and it is drifting away at 3.8 cm a year.

Radius
1,737 km
Mass
7.35 × 10²² kg
Gravity
1.62 m/s²
Orbital period
27.3 days
Distance
384,400 km (mean)
Temperature
−173 to 127 °C
Tidally locked
Yes
Visited by humans
1969–1972

Seeing Moon in real time

Cosmoscope puts Moon 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 Moon 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 Moon 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…