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Gilbert, William

(Encyclopedia) Gilbert, William, 1544–1603, English scientist and physician. He studied medicine at Cambridge (M.D., 1569), where he was elected a Fellow of St. John's College, and set up practice in…

Uranus , in astronomy

(Encyclopedia) UranusUranusy&oobreve;rāˈnəs, y&oobreve;rˈə– [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…

Anthropocene

(Encyclopedia) Anthropocene Epoch, an unofficial term used by scientists to describe a period of time—up to the present—in which humanity has impacted the planet on a global scale. The…

Schwabe, Samuel Heinrich

(Encyclopedia) Schwabe, Samuel HeinrichSchwabe, Samuel Heinrichzäˈm&oomacr;ĕl hīnˈrĭkh shväbˈə [key], 1789–1875, German apothecary and amateur astronomer. In the hope of discovering a new planet…

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…

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…

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.…

Jupiter, in astronomy

(Encyclopedia) JupiterJupiterj&oomacr;ˈpətər, in astronomy, 5th planet from the sun and largest planet of the solar system. Astronomers have discovered 79 satellites orbiting Jupiter, but five…

Galle, Johann Gottfried

(Encyclopedia) Galle, Johann GottfriedGalle, Johann Gottfriedyōˈhän gôtˈfrēt gäˈlə [key], 1812–1910, German astronomer. He is noted for his discovery of the planet Neptune, Sept. 23, 1846, by…