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Tagged with movement observational-astronomy
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What is the name of a device for detecting moving objects? [duplicate]
A while ago I saw a report on TV, where an astronomer described a device that was used for detecting movement of stellar objects (mainly asteroids, I think) before the age of computers. In order to ...
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Why can't we determine the center of the universe [duplicate]
I find this baffling. If we can observe objects moving away from us and each other, than it stands to reason that we can track their paths (relative to each other and ourselves) backward to find a ...
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