Quote:
Originally Posted by WT Sharpe
Great video.
We know that astronauts in our day have already traveled through time.
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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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I think the best example are the pilots of some of the jets, like the SR-71, the Concorde, and others. Again, the difference is very, very small, but I bet measurable.