discrete radio sources

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• Molonglo Reference Catalogue of Radio Sources — (MRC) is an astronomical catalog containing 12 141 discrete sources from a 408 MHz survey with the Molonglo Radio Telescope.[1] References ^ ADC/CDS Standard Document for Catalog . Astronomical Data Center …   Wikipedia

• radio source — Astron. a cosmic object or phenomenon, as a galaxy, pulsar, quasar, or the remnant of a supernova or of a galactic collision, that emits radio waves. [1945 50] * * * ▪ astronomy       in astronomy, any of various objects in the universe that emit …   Universalium

• radio and radar astronomy — Study of celestial bodies by measuring the energy they emit or reflect at radio wavelengths. It began in 1931 with Karl Jansky s discovery of radio waves from an extraterrestrial source. After 1945, huge dish antennas, improved receivers and data …   Universalium

• Scanner (radio) — PSR 800 GRE Digital trunking scanner …   Wikipedia

• Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …   Wikipedia

• Antenna (radio) — Whip antenna on car …   Wikipedia

• Ukrainian T-shaped Radio telescope, second modification — The Ukrainian T shaped Radio telescope, second modification (official abbreviation UTR 2) is the world s largest radio telescope at decametre wavelengths. It was built in the early 1970s near the village of Grakovo (coord|50|52|N|36|08|E|), 65 km …   Wikipedia

• electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …   Universalium

• telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …   Universalium

• Gart Westerhout — Summary Biography Gart Westerhout (1927 ) is a Dutch astronomer. Well before completing his university studies at Leiden, he had already become well established internationally as a radio astronomer in The Netherlands, specializing in studies of… …   Wikipedia

• star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …   Universalium