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infrared astronomy

(Encyclopedia)infrared astronomy, study of celestial objects by means of the infrared radiation they emit, in the wavelength range from about 1 micrometer to about 1 millimeter. All objects, from trees and building...

Baikonur Cosmodrome

(Encyclopedia)Baikonur or Baykonur Cosmodrome both: bīˌkəno͞orˈ [key], formerly secret aerospace launch complex, Qyzylorda prov., S central Kazakhstan, near Baikonur (originally, 1958–95, Leninsk) but c.200 ...

Orbiting Astronomical Observatory

(Encyclopedia)Orbiting Astronomical Observatory (OAO), series of four orbiting observatories (see observatory, orbiting) launched between 1966 and 1972 by the National Aeronautics and Space Administration (NASA) to...

Australian terrier

(Encyclopedia)Australian terrier, breed of small, hardy terrier perfected in Australia c.1885. It stands about 10 in. (25.4 cm) high at the shoulder and weighs from 12 to 14 lb (5.5–6.4 kg). Its weather-resistant...

Sable Island, Nova Scotia, Canada

(Encyclopedia)Sable Island, low, sandy island, c.25 mi (40 km) long and 1 mi (1.6 km) wide, off N.S., Canada, ESE of Halifax, near the edge of the continental shelf. The crescent-shaped island is the exposed part o...

Samoyed

(Encyclopedia)Samoyed sămˈəyĕd [key], breed of hardy, muscular working dog developed in N Siberia many centuries ago. It stands from 19 to 23.5 in. (48.3–59.7 cm) high at the shoulder and weighs from 35 to 65...

air traffic control

(Encyclopedia)air traffic control, the system by which airplanes are safely routed into and out of major airports. Air traffic control in the United States is centered in a number of regional control centers that r...

Andrée, Salomon August

(Encyclopedia)Andrée, Salomon August säˈlo͞omôn ouˈgəst ändrāˈ [key], 1854–97, Swedish polar explorer, grad. Royal Inst. of Technology, Stockholm. An aeronautical engineer and head of the Swedish patent...

puli

(Encyclopedia)puli po͝olˈē, pyo͞oˈlē [key] (pl. pulik), a breed of wiry, medium-sized working dog developed nearly 1,000 years ago in Hungary. It stands from 16 to 18 in. (40.6–45.7 cm) high at the shoulder...

radiosonde

(Encyclopedia)radiosonde rāˈdēōsŏnd [key], group of instruments for simultaneous measurement and radio transmission of meteorological data, including temperature, pressure, and humidity of the atmosphere. The ...