So, this is why we haven't gone back to the Moon..

WATCH - So, this is why we haven't gone back to the Moon..
The Moon is Earth's only natural satellite. It orbits at an average distance of 384400 km, about 30 times the planet's diameter. Being tidally locked, it always faces Earth with its near side. This results in the lunar month of 29.5 days matching the lunar day.

Speakers:
Greg Reese