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space travel
space travel see space exploration ; space science .
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Copper
Copper river, c.300 mi (480 km) long, rising in the Wrangell Mts., SE Alaska, and flowing S through the Chugach Mts. to the Gulf of Alaska. Copper deposits near the upper river, long mined by natives, attracted the attention of Russians and later Americans, but exploration was difficult because of ...
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Great Bear Lake
Great Bear Lake largest lake of Canada and fourth largest of North America, c.12,275 sq mi (31,800 sq km), c.190 mi (310 km) long and from 25 to 110 mi (40-177 km) wide, Northwest Territories, on the edge of the Canadian Shield. It is drained to the W by the Great Bear River (c.100 mi/160 km long),...
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Francisco de Ibarra
Francisco de Ibarra , 1539?-1575, Spanish conquistador in Mexico. In 1554, after founding Fresnillo , he headed an expedition to the N of Zacatecas. For the next 20 years he explored, founded settlements, and exploited mines in the vast region comprising present-day Durango, Chihuahua, and part of ...
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Lincoln Ellsworth
Lincoln Ellsworth 1880-1951, American explorer, b. Chicago, Ill. He was a surveyor and engineer in railroad building and later a prospector and mining engineer in NW Canada. He became the financial supporter and associate of Roald Amundsen in his arctic aviation ventures. In 1926 they flew in the...
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emerald
emerald the green variety of beryl , of which aquamarine is the blue variety. Chemically, it is a beryllium-aluminum silicate whose color is due to small quantities of chromium compounds. The emerald was highly esteemed in antiquity; the stones were used for ornaments in early Egypt where some of ...
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Great Slave Lake
Great Slave Lake second largest lake of Canada, c.10,980 sq mi (28,400 sq km), Northwest Territories, named for the Slave (Dogrib), a tribe of Native Americans. It is c.300 mi (480 km) long and from 12 to 68 mi (19-109 km) wide and is the deepest lake (2,015 ft/614 m) of North America. The Hay and ...
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Simon Fraser
Simon Fraser 1776-1862, Canadian explorer and fur trader. Born in Bennington, Vt., he was taken to Canada as a child. He entered the service of the North West Company in 1792, and in 1801 he was made a partner. In 1805 he was chosen to inaugurate the company's operations beyond the Rocky Mts., an...
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New Britain
New Britain volcanic island (1990 pop. 315,649), c.14,600 sq mi (37,810 sq km), SW Pacific, largest island of the Bismarck Archipelago and part of Papua New Guinea, in which it forms two provinces (East and West New Britain). Rabaul is the chief town and port. The island is mountainous, with ac...
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Banks Island
Banks Island c.26,000 sq mi (67,340 sq km), NW Northwest Territories, Canada, in the Arctic Ocean, in the Arctic Archipelago. It is the westernmost of the group and is separated from the mainland by Amundsen Gulf. Banks Island, which has many lakes, is a hilly plateau rising to c.2,000 ft (610 m) i...
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