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Pluto, in astronomy

(Encyclopedia)Pluto, in astronomy, a dwarf planet and the first Kuiper belt, or transneptunian, object (see comet) to be discovered (1930) by astronomers. Pluto has an elliptical orbit usually lying beyond that of ...

space shuttle

(Encyclopedia)space shuttle, reusable U.S. space vehicle (1981–2011). Developed by the National Aeronautics and Space Administration (NASA) and officially known as the Space Transportation System (STS), it was th...

navigation

(Encyclopedia)navigation, science and technology of finding the position and directing the course of vessels and aircraft. The next great revolution in navigation occurred in the 20th cent., when radio signals ...

Shanghai

(Encyclopedia)Shanghai shăngˈhīˈ, shängˈhīˈ [key], city and municipality (2010 pop. 23,019,148), in, but independent of, Jiangsu prov., E China, on the Huangpu (Whangpoo) River where it flows into the Chang...

geology

(Encyclopedia)geology, science of the earth's history, composition, and structure, and the associated processes. It draws upon chemistry, biology, physics, astronomy, and mathematics (notably statistics) for suppor...

space probe

(Encyclopedia)space probe, space vehicle carrying sophisticated instrumentation but no crew, designed to explore various aspects of the solar system (see space exploration). Unlike an artificial satellite, which is...

Beijing

(Encyclopedia)Beijing pē-kĭng, pā– [key], city and independent municipality (2021 est. pop. 20,897,000), ...

Pueblo, indigenous people of North America

(Encyclopedia)Pueblo, name given by the Spanish to the sedentary Native Americans who lived in stone or adobe communal houses in what is now the SW United States. The term pueblo is also used for the villages occup...

Crimea

(Encyclopedia)Crimea krīmēˈə [key], Rus. and Ukr. Krym, peninsula and republic (1991 est. pop. 2,363,000), c.10,000 sq mi (25,900 sq km), SE Europe, linked with the mainland by the Perekop Isthmus. The peninsul...

space exploration

(Encyclopedia)CE5 Moon mission assembly CE5 Stages in a moon mission shown counterclockwise from launching on the first day to splashdown on the ninth day. space exploration, the investigation of physical co...