To shoot the spacewalk scenes a LED screen was folded into a box, the actor was put inside, and the light from the screen was used to light the actor. That way, instead of moving either Bullock or Clooney in the middle of static lights, the projected image moved while they stayed still. The “light box”, key to the spacewalk scenes was a nine-foot cube just big enough for one actor.
Gravity (2013)
Thank you to Rita for the video link.
Amazing.