This dimension sorts celestial objects by their basic kind, such as a planet, star, galaxy or comet. Wikipedia notes that "asteroids, moons, planets, and stars are astronomical bodies," while looser structures such as "planetary systems, star clusters, nebulae, and galaxies" count as objects in the wider sense. Browsing by object type keeps similar kinds of objects grouped together.
Facts
Comparison
Field Origin Era Object Type
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.
Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.
Sign in to dispute this or suggest a correction.