Improvements in telescopes have been mirrored by advances in our understanding of the Universe. Beyond Earth: Mapping the Universe (National Geographic, $40) is a collection of essays edited by David DeVorkin that looks back at some 5,000 years of cosmology — including the remarkable discovery by Edwin Hubble (shown above, seated at the Hooker telescope at the Mount Wilson Observatory in California) that the Universe is expanding.
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A changing view of the Universe. Nature 416, 680 (2002). https://doi.org/10.1038/416680b
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DOI: https://doi.org/10.1038/416680b