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  3. The elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point

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The elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point

Answer for the clue "The elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point ", 4 letters:
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