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Caliban

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

Bianca

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

Belinda

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

day

(Encyclopedia)day, period of time for the earth to rotate once on its axis. The ordinary day, or solar day, is measured relative to the sun, being the time between successive passages of the sun over a stationary o...

magnetic pole

(Encyclopedia)magnetic pole, the two roughly opposite ends of the planet where the earth's magnetic intensity is the greatest, as the north and south magnetic poles. For the magnetic north, it is the direction from...

Arecibo Observatory

(Encyclopedia)Arecibo Observatory, radio-astronomy facility located near Arecibo, Puerto Rico, part of the National Astronomy and Ionosphere Center. Conceived by, designed by, and built under the supervision of Wil...

Velasco, José María

(Encyclopedia)Velasco, José María hōsāˈ märēˈä vāläsˈkō [key], 1840–1912, Mexican landscape painter; teacher of Diego Rivera. A gifted artisan descended from a family of shawl weavers, he entered the...

transit

(Encyclopedia)transit, in astronomy, passage of a body across a meridian or passage of a small body across the visible disk of a larger one. (The passage of a large body across a smaller one is called an eclipse or...

planet

(Encyclopedia)planet [Gr.,=wanderer], a large nonluminous body of rock, gas, or ice that orbits the sun or another star, has a rounded shape due to gravity, and has cleared its orbit of smaller objects. The term, o...

Rhadamanthus

(Encyclopedia)Rhadamanthus rădˌəmănˈthəs [key], in Greek mythology, son of Zeus and Europa. Renowned for his justice on earth, the gods made him one of the judges of the dead. ...