Description #2500467

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

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, 1st letter R
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, 2nd letter T
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, 3rd letter L
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, 4th letter T

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