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encounter theory

(Encyclopedia)encounter theory, in astronomy, see solar system. ...

population I and II

(Encyclopedia)population I and II, in astronomy: see stellar populations. ...

aether

(Encyclopedia)aether: see ether, in physics and astronomy. ...

Rockefeller Center

(Encyclopedia)Rockefeller Center, complex of buildings in central Manhattan, New York City, between 48th and 51st streets and Fifth Ave. and the Ave. of the Americas (Sixth Ave.). The project was sponsored by John ...

Ultima Thule

(Encyclopedia)Ultima Thule, in astronomy and space exploration, nickname for Arrokoth. ...

Dysnomia

(Encyclopedia)Dysnomia, in astronomy, the moon, or natural satellite, of Eris. ...

Miranda

(Encyclopedia)Miranda, in astronomy, one of the moons, or natural satellites, of Uranus. ...

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