An astronaut takes what he measures to be a 10-min nap in a space station orbiting Earth at 8000 m/s. A signal is sent from the station to Earth at the instant he falls asleep, and a second signal is sent to Earth the instant he wakes.
Does an observer on Earth measure the astronaut’s nap as being shorter than, longer than, or equal to 10 min?
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An astronaut takes what he measures to be a 10-min nap in a space station orbiting Earth at 8000 m/s...
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