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How Do We Figure Out Celestial Distances?

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Posted by Ken Westervelt on December 1, 2004 00:11:05 UTC

I know that we have figures that say how far away stars are, but I have next to no knowledge how the process works. A radar-like system obviously would prove ineffective after a timespan of a few years, yet we can confidently say that certain star systems are hundreds or thousands of light-years away.

Could someone please explain the process of estimating celestial distance in laymen's terms?

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