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Juno, in astronomy

(Encyclopedia)Juno jo͞oˈnō [key], in astronomy, 3d asteroid to be discovered. It was found in 1804 by C. Harding. It has a diameter of c.120 mi (190 km). Its average distance from the sun is 2.67 astronomical un...

Juno, in Roman religion and mythology

(Encyclopedia)Juno, in Roman religion and mythology, wife and sister of Jupiter. In early Roman times she, like the Greek Hera (with whom she was later identified), was goddess and protector of women, concerned esp...

Leo, in astronomy

(Encyclopedia)Leo [Lat.,=the lion], northern constellation lying S of Ursa Major and on the ecliptic (apparent path of the sun through the heavens) between Cancer and Virgo; it is one of the constellations of the z...

Larissa, in astronomy

(Encyclopedia)Larissa, in astronomy, one of the natural satellites, or moons, of Neptune. ...

Ariel, in astronomy

(Encyclopedia)Ariel ârˈēəl [key], in astronomy, one of the moons, or natural satellites, of Uranus. ...

Leda, in astronomy

(Encyclopedia)Leda lēˈdə [key], in astronomy, one of the 39 known moons, or natural satellites, of Jupiter. ...

Metis, in astronomy

(Encyclopedia)Metis mēˈtĭs [key], in astronomy, one of the 39 known moons, or natural satellites, of Jupiter. ...

Mimosa, in astronomy

(Encyclopedia)Mimosa or Beta Crucis bāˈtə kro͞oˈsĭs [key], bright star in the constellation Crux (Southern Cross); 1992 position R.A. 12h47.3m, Dec. −59°39′. It is sometimes called Becrux, from its Bayer...

Mercury, in astronomy

(Encyclopedia)Mercury, in astronomy, nearest planet to the sun, at a mean distance of 36 million mi (58 million km); its period of revolution is 88 days. Mercury passes through phases similar to those of the moon a...

Atlas, in astronomy

(Encyclopedia)Atlas, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XV (or S15), Atlas is a small, irregularly shaped (nonspherical) body measuring about 25 mi (40 km) ...