Columbia Encyclopedia

Search results

136 results found

Uranus , in astronomy

(Encyclopedia)Uranus yo͝orāˈnəs, yo͝orˈə– [key], in astronomy, 7th planet from the sun, at a mean distance of 1.78 billion mi (2.87 billion km), with an orbit lying between those of Saturn and Neptune; its...

Evans, Maurice

(Encyclopedia)Evans, Maurice, 1901–89, Welsh-American actor. Evans came into prominence in 1928 and in 1934 was a leading man with the Old Vic. He first appeared on Broadway in 1936 in Romeo and Juliet with Katha...

Schwabe, Samuel Heinrich

(Encyclopedia)Schwabe, Samuel Heinrich zäˈmo͞oĕl hīnˈrĭkh shväbˈə [key], 1789–1875, German apothecary and amateur astronomer. In the hope of discovering a new planet between Mercury and the sun, he made...

quadrature

(Encyclopedia)quadrature, in astronomy, arrangement of two celestial bodies at right angles to each other as viewed from a reference point. If the reference point is the earth and the sun is one of the bodies, a pl...

Saturn, in astronomy

(Encyclopedia)CE5 Saturn and its ring system as seen from Earth Saturn, in astronomy, 6th planet from the sun. Saturn has 82 confirmed natural satellites, many of which have not been named. Five of the discov...

Jupiter, in astronomy

(Encyclopedia)Jupiter jo͞oˈpətər [key], in astronomy, 5th planet from the sun and largest planet of the solar system. Astronomers have discovered 79 satellites orbiting Jupiter, but five of those, small sate...

Galle, Johann Gottfried

(Encyclopedia)Galle, Johann Gottfried yōˈhän gôtˈfrēt gäˈlə [key], 1812–1910, German astronomer. He is noted for his discovery of the planet Neptune, Sept. 23, 1846, by following the guidance of calculat...

Schiaparelli, Giovanni Virginio

(Encyclopedia)Schiaparelli, Giovanni Virginio skyäpärĕlˈlē [key], 1835–1910, Italian astronomer. He was director (1862–1900) of the Brera Observatory, Milan. He is especially noted for having detected (18...

Horrocks, Jeremiah

(Encyclopedia)Horrocks or Horrox, Jeremiah both: hŏrˈəks [key], 1618?–1641, English astronomer. He made the first observation of the transit of Venus. His Venus in sole visa, which narrates this experience, wa...

syzygy

(Encyclopedia)syzygy sĭzˈəjē [key], in astronomy, alignment of three bodies of the solar system along a straight or nearly straight line. A planet is in syzygy with the earth and sun when it is in opposition or...