This dimension groups celestial objects by the constellation in which they appear in the sky. Wikipedia notes that in 1922 "the International Astronomical Union (IAU) formally accepted the modern list of 88 constellations," each covering its own fixed region of the sky. Browsing this way shows every notable object found within one constellation.
Facts
Comparison
Field Origin Era Constellation
Sources
1. Wikipedia: Galaxy
Wikimedia FoundationGalaxy, Observation history section, 1926 Hubble classification sentenceQuote, Galaxy, Observation history section, 1926 Hubble classification sentence
In 1926 Hubble produced a classification of galactic morphology that is used to this day.
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