Geek Trivia: What Subtle Message Does Mars Rover Curiosity’s Wheels Leave Behind?

What Subtle Message Does Mars Rover Curiosity’s Wheels Leave Behind?

  1. (RDB) Ray Douglas Bradbury
  2. (CES) Carl Edward Sagan
  3. (NASA) National Aeronautics and Space Administration
  4. (JPL) Jet Propulsion Lab

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