Quote:
Originally Posted by HarryT
In the case of the Apollo astronauts, there were two competing factors at work.
1. The speed of their travel would cause a small amount of time dilation, which would result in time passing a little more slowly for them than for people back on Earth.
2. They spent time in a slightly weaker gravitational field than people back on Earth did. This would result in time passing a little more quickly than it did back on Earth.
Of these, the time dilation effect would be by far the greater (although still very, very small).
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Quite true. I had mentioned that in an earlier post in another thread around here somewhere, but I decided to omit those details in this post for sake of brevity. Gravity and acceleration both affect the flow of time.