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A new database from the NASA/IPAC Extragalactic Database (NED) of galaxy Distances (NED-D), normally the source for the newest precision-based estimates, provides access to the oldest redshift-independent extragalactic distances in the publication record. Two new surprises emerge when the early distance estimates are placed in chronological order. Both discoveries credited to Hubble based on these distances had in fact been made earlier. Hubble however, proved the case.

生成讲解博客的中文版本

生成AI智能校验的中文版本