Edwin Powell Hubble1939
Hubble publishes a report on barred spiral galaxies, extending his morphological work on systems whose spiral arms emerge from a central bar rather than directly from the nucleus.
United States of America · Science / Astronomy. Chronological records rendered directly from the World History Database.
Hubble publishes a report on barred spiral galaxies, extending his morphological work on systems whose spiral arms emerge from a central bar rather than directly from the nucleus.
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