Imagine that in the distant future you (on earth) are watching a transmission from Pluto, which at the time is 5.0 light-hours from earth. You notice that a clock on the wall behind the person speaking in the video reads 12:10 p.m. You note that your watch reads exactly the same time. Is the station clock synchronized with your watch?
A) Yes, it is.
B) No, it isn't.
C) The problem doesn't give enough information to tell.

Question

Quizplus · Accepted Answer

The station clock is not synchronized with your watch because the transmission from Pluto takes 5.0 light-hours to reach Earth. This means when you see the clock showing 12:10 p.m., that was the time on Pluto 5 hours ago. Therefore, the actual time on Pluto when you observe the clock reading 12:10 p.m. on your watch would be 5:10 p.m.

Imagine That in the Distant Future You (On Earth) Are