A clear, symmetrical letter on a rock looks like a set-dresser’s label. Prop rocks are numbered or lettered in film studios. If the letter is on a NASA photo, it suggests the rock was placed. [1]
The strongest version of this theory
Film crews label their props.
The sources
- Stuart Robbins, Exposing PseudoAstronomy: The prop rock labeled with a “C” (2008) ↗
Blog by a planetary scientist comparing print generations of the “C rock” frame.
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