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Science
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TTT recently posted a thread (based on a youtube video) which besides explaining the above, covered why you cannot exceed the speed of light. In that youtube video, the time dilation effect was... ...
Whenever we talk about aliens etc the limiting factor is always c. The usual suspects never accept that c is the speed limit and cite future invention etc. Anyway here is another very good... ...
I saw a talk by Jean-Pierre some years ago where he described his work on MHD and went on to suggest how to use it for flight propulsion. As his sketches and diagrams appeared on the blackboard,... ...
A while ago, I posted my first question about clone reproduction. The question went something like this: 'If I clone myself twice, one being male, the other female, would the offspring be a copy... ...