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How can observations about the universe be so exact when virtually all of the light to make these obsevations was less than 200 years away at the time that careful observation began?
Wiki User
∙ 14y ago
More importantly than where the light was when precision astronomical measurements began is where/when the light originated from. Since the light samples a large range of space and time we can make useful and accurate cosmological observations.
Wiki User
∙ 14y ago
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