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: Binary star
Wikimedia FoundationBinary star, Discovery section, 1803 Herschel sentenceQuote, Binary star, Discovery section, 1803 Herschel sentence
By 1803, he had observed changes in the relative positions in a number of double stars over the course of 25 years, and concluded that, instead of showing parallax changes, they seemed to be orbiting each other in binary systems.
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