A round-trip to the moon? That's far too generous. The moon isn't nearly that far away. https://www.wolframalpha.com/input?i=distance+to+the+moon+in+millilight

A round-trip to the moon? That's far too generous. The moon isn't nearly that far away. https://www.wolframalpha.com/input?i=distance+to+the+moon+in+millilightseconds https://www.wolframalpha.com/input?i=distance+to+the+moon+in...