Edwin Powell Hubble1920
Hubble publishes an observational note on the planetary nebula IC 2003, adding a focused study of a compact nebular object to his early Mount Wilson research.
United States of America · Science / Astronomy. Chronological records rendered directly from the World History Database.
Hubble publishes an observational note on the planetary nebula IC 2003, adding a focused study of a compact nebular object to his early Mount Wilson research.
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