The Solar System

Earth

Home: the only world known to have life, and the only one with oceans of liquid water on its surface.

The Blue Marble
The whole of Africa, Zimbabwe included, photographed by the crew of Apollo 17 on their way to the Moon in December 1972. Credit: NASA, Public domain (NASA).
Size
12,756 km across.
One year
365.25 days
One day
24 hours
Moons
One, the Moon
Spacecraft
Thousands of satellites, including Zimbabwe’s ZimSat-2, and the International Space Station 400 km up.

Sizes and periods from NASA’s planetary fact sheets; moon counts from NASA Science.