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Greely, Adolphus Washington

(Encyclopedia) Greely, Adolphus Washington, 1844–1935, American army officer and arctic explorer, b. Newburyport, Mass. Entering the Union army at 17, he emerged a brevet major of volunteers at the…

Kotelny Island

(Encyclopedia) Kotelny IslandKotelny Islandkōtĕlˈnē [key], largest island of the Anjou group of the New Siberian Islands, c.100 mi (160 km) long and c.60 mi (100 km) wide, off N Siberian Russia. The…

Etah

(Encyclopedia) EtahEtahēˈtə [key], abandoned village, NW Greenland, on Smith Sound, opposite Ellesmere Island. The Eskimo tribe discovered there by John Ross in 1818 is known as the Polar Eskimo and…

Mawson, Sir Douglas

(Encyclopedia) Mawson, Sir Douglas, 1882–1958, Australian antarctic explorer and geologist, b. England. His first geographical expedition was to the New Hebrides Islands as a geologist in 1903. As a…

midnight sun

(Encyclopedia) midnight sun, phenomenon in which the sun remains visible in the sky continuously for 24 hr or longer, occurring only in the polar regions. The midnight sun is due to the fact that the…

Mars, in astronomy

(Encyclopedia) Mars, in astronomy, 4th planet from the sun, with an orbit next in order beyond that of the earth. Mars has two natural satellites, discovered by Asaph Hall in 1877. The innermost…

milkwort

(Encyclopedia) milkwort, common name for the Polygalaceae, a family including herbs, shrubs, and trees found in all parts of the world except New Zealand and the polar regions. Several milkworts (…

Arctic Circle

(Encyclopedia) Arctic Circle, imaginary circle on the surface of the earth at 661&fslsh;2°N latitude, i.e., 231&fslsh;2° south of the North Pole. It marks the northernmost point at which the…

Antarctic Circle

(Encyclopedia) Antarctic Circle, imaginary circle on the surface of the earth at 661&fslsh;2°S lat., i.e., 231&fslsh;2° north of the South Pole. It marks the southernmost point at which the…

Drygalski, Erich von

(Encyclopedia) Drygalski, Erich vonDrygalski, Erich vonāˈrĭkh fən drēgälˈskē [key], 1865–1949, German polar explorer. A professor of geography at the Univ. of Munich, he led an expedition that…