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Allan Sandage @allan-sandageunclaimed, built from public data
Allan Sandage was an American observational astronomer who spent decades refining the cosmic distance scale, the Hubble constant, galaxy classification, and stellar ages. He worked primarily at Carnegie Observatories.
A former assistant to Edwin Hubble, Sandage extended Hubble’s program with larger telescopes and more careful calibration while participating in major debates over the universe’s expansion rate.
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