"The ceiling would have to be so high, and the light would have to be so bright."

 For April the First, my favourite accidental physicists "The Corridor Crew" loose their visual-effects-dissecting acumen on the moon landing, providing typically conclusive, keen and concise insights into its unfakeability. Watch and learn why this shot from 2001 couldn't possibly have taken place inside a vacuum, and why moonwalk footage from Apollo 11 couldn't possibly have taken place outside of one.

 

 

 (And further confirmation, of course, can be found here.)