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Xena
(Encyclopedia)Xena, in astronomy: see Eris.gamma-ray astronomy
(Encyclopedia)gamma-ray astronomy, study of astronomical objects by analysis of the most energetic electromagnetic radiation they emit. Gamma rays are shorter in wavelength and hence more energetic than X rays (see...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. ...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. ...radar astronomy
(Encyclopedia)radar astronomy, application of radar to the determination of distances and planetary features within the solar system, such as rotation rates. A short burst of radio waves is transmitted in the direc...Juliet
(Encyclopedia)Juliet, in astronomy, one of the natural satellites, or moons, of Uranus. ...Ophelia
(Encyclopedia)Ophelia, in astronomy, one of the natural satellites, or moons, of Uranus. ...Browse by Subject
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