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Welcome to StackExchange. Good question. Hubble's Law says that an object's velocity away from an observer is directly proportional to its distance from the observer. In other words, the farther away something is the faster it is moving away from us. The redshift tells how fast a star is receding from us and we can therefore get the distance. Hubble's ...


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Because distance is lumpy. But bytes, booms, and buzzes vary smoothly. Those examples from the O.P. where metric prefixes became conventional -- terabytes, megatons, gigahertz -- are domains where human experience proceeded continuously across orders of magnitude. There were no hard, persistent thresholds in the growth of hard drives, ICs, or cables. ...


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