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Brahe, Tycho
(Encyclopedia) Brahe, TychoBrahe, Tychotīˈkō brä [key], 1546–1601, Danish astronomer. The most prominent astronomer of the late 16th cent., he paved the way for future discoveries by improving…time , sequential arrangement of all events
(Encyclopedia) time, sequential arrangement of all events, or the interval between two events in such a sequence. The concept of time may be discussed on several different levels: physical,…Easter
(Encyclopedia) Easter [A.S. Eastre, name of a spring goddess], chief Christian feast, commemorating the resurrection of Jesus after his crucifixion. In the West, Easter is celebrated on the Sunday…Iapetus, in astronomy
(Encyclopedia) IapetusIapetusīăpˈĭtəs [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn VIII (or S8), Iapetus is 907 mi (1460 km) in diameter, orbits…Hammerstein, Oscar, 2d
(Encyclopedia) Hammerstein, Oscar, 2d, 1895–1960, American lyricist and librettist, b. New York City, grad. Columbia, 1916; grandson of Oscar Hammerstein. His first success was Wildflower (1923),…planetary science
(Encyclopedia) planetary science or planetology, study of planets and planetary systems as a whole. Planetary science applies the theories and methods of traditional disciplines such as astronomy,…Osiris
(Encyclopedia) OsirisOsirisōsīˈrĭs [key], in Egyptian religion, legendary ruler of predynastic Egypt and god of the underworld. He was the son of the sky goddess Nut and the earth god Geb. The great…geophysics
(Encyclopedia) geophysics, study of the structure, composition, and dynamic changes of the earth, its atmosphere, hydrosphere and magnetosphere, based on the principles of physics. The term was…geyser
(Encyclopedia) geysergeysergīˈzər [key] [Icel.], hot spring from which water and steam are ejected periodically to heights ranging from a few to several hundred feet. Notable geysers are found in…United Nations Secretaries-General (table)
(Encyclopedia) United Nations Secretaries-General Secretary-General Nationality Dates in Office Trygve Halvdan Lie Norwegian 1946–53 Dag Hammarskjöld Swedish 1953–61 U Thant Burmese 1962–71…Trending
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