Here's the science refresher you need before diving into Netflix's '3 Body Problem'

• Netflix's "3 Body Problem" is based on a science-fiction trilogy and follows a group of physicists.
• We asked an astronomer and an aerospace engineer to explain some of the show's scientific concepts.
• It might help to have a bit of background on the Fermi paradox and the Wow! signal before you watch.

The upcoming Netflix show "3 Body Problem" is a sci-fi story about a group of physicists grappling with the discovery of an alien civilization.