It was created by the LA-based Radical Friend directorial team, and took three months and a mix of motion-sensitive technology, time-lapse photography, live-action footage, and animation to complete. I don't know the exact science even after reading the explanation five times, but viewers are able to interact with the finished clip. As we're told:
Using a webcam, viewers can shift the position of the heavenly bodies by slowly moving their own heads or hands left and right in front of the camera's lens. Moving the cursor will have the same effect if users choose that option.