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Searched for: Key Concept is Astronomy -- Distances
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Stars live for a very long time compared to human lifetimes. Your great, great grandparents saw the same stars as you will see tonight (if it's clear). Our lifetimes are measured in years. Star lifetimes are measured in...
This website, developed by Maxine Phaisalakani at the University of Toronto Department of Astronomy and Astrophysics, introduces in a slide show presentation research that led to the discovery of the expansion of the...
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