Star Bound Magazine

Ground School

Where the satellites are

Earth is on the left. Each ring is an orbit, out to the Moon. Tap a ring or a belt to read about it, then switch to true scale and see how close to home nearly everything really is.

Distances are stretched so the inner orbits can be told apart.
Orbits around Earth out to the Moon Earth Altitudes above Earth's surface. Sources: NASA, NOAA, ESA.

Ground School is published open: take it, build it better.