China Sent Something to the Far Side of the Moon to Bring Back Samples for the First Time

The Moon is a peculiar thing in the skies of our world. A companion to Earth since times immemorial, it always shows us the same face, meaning there's an entire half of the satellite we know very little about. And China just sent a probe there to snatch samples and bring them back home. The Moon always shows Earthlings the same face because it's tidally locked. That's a condition in celestial mechanics that means the time i... (continue reading...)