/u/MateoElFidel's posts in /r/askscience
if we have a craft that travels at 99.9% the speed of light towards, say, Jupiter, would the people/instruments inside the craft perceive that Jupiter is seemingly fast forwarding roughly twice as fast? (as if we're watching a video of it in 2X fast motion.)
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Could a frenchman and an englishman (both only able to speak their own language) be able to communicate effectively through sign language? considering that the two languages are similar in format.
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How large can a human being be (everything still being normal, just larger in scale) before any complications arise?
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Why are orbital systems (planets around stars and stars around galaxies) more 2 dimensional (circular) than 3 dimensional (spherical)?
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Could today's astrologists be able to predict what our night sky might look like in the next 100 million years?
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How many (Estimated) known species of animals are there? including fossilized and extinct species such as the dinosaurs and the trilobites?
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Would having the ability to harness enough renewable energy for human civilization secure our energy needs for the next 5.5 billion years on earth?
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