Edwin Powell Hubble1920
Hubble's doctoral research is published as Photographic Investigations of Faint Nebulae in the Publications of the Yerkes Observatory, presenting his systematic photographic study of faint nebular objects.
United States of America · Science / Astronomy. Chronological records rendered directly from the World History Database.
Hubble's doctoral research is published as Photographic Investigations of Faint Nebulae in the Publications of the Yerkes Observatory, presenting his systematic photographic study of faint nebular objects.
This factsheet is generated from stored World History Database records matching the country, broad category, detailed category and exact Event value shown above. Duplicate display records are collapsed; database wording is otherwise preserved. Source provenance varies by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.