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Question by : What happens when an aircraft, travelling faster than the speed of sound, turns around ? For example, an aeroplane travelling at Mach 2 turns around and returns along the same flight path,so that it meets the turbulent air through which it has just flown. Would there be any strange or dangerous effects [...]

Question by gabriel sachs: What happens to a human being travelling at the speed of light? I’m interested in knowing why isn’t possible to travel at the speed of light. I know something changes dramatically and I wanted to know specifaclly what would happen to a human travelling at that speed. Thanx a lot! Best [...]