detection of nuclear explosions
71TRW — This article is about the defunct company. For the current company with a similar name, see TRW Automotive. This article is about the defunct company. For the Specific Area Message Encoding event, see Tropical storm warning. TRW Inc. Industry… …
72vela — /vee leuh/, n. pl. of velum. * * * ▪ reconnaissance satellite any of a series of 12 unmanned U.S. reconnaissance satellites developed to detect radiation from nuclear explosions in the Earth s atmosphere. Launched from 1963 to 1970, the… …
73List of intelligence gathering disciplines — Intelligence Gathering DisciplinesHUMINTHuman Intelligence gathered from a person on the ground. *Espionage. * Friendly accredited diplomats * Military attaches * Patrolling (Military police, patrols, etc) *Non governmental organizations (NGOs) * …
74International Noble Gas Experiment — The International Noble Gas Experiment (INGE) was formed in 1999 as an informal expert s group of developers of radioactive xenon measurement systems for the International Monitoring System for the Comprehensive Nuclear Test Ban Treaty (CTBT).… …
75Defense Support Program — Painting of a DSP satellite on station. Primary sensor (lower left) is pointed at Earth. The star sensor is seen pointing off to the side, above and to the right. The Defense Support Program (DSP) is a program of the U.S. Air Force that operates… …
76NORSAR — or Norwegian Seismic Array was established in 1968 as part of the Norwegian US agreement for the detection of earthquakes and nuclear explosions. NORSAR was the first non US site included in ARPANET in 1973. Since 1999, NORSAR has been an… …
77Asteroid — For the arcade video game, see Asteroids (video game). For other uses, see Asteroid (disambiguation). A composite image, to scale, of the asteroids that have been imaged at high resolution. As of 2011 they are, from largest to smallest: 4 Vesta,… …
78Over-the-horizon radar — US Navy Relocatable Over the Horizon Radar station Over the horizon radar, or OTH (sometimes also beyond the horizon, or BTH), is a design concept for radar systems to allow them to detect targets at very long ranges, typically up to thousands of …
79Thaler, William John — ▪ 2006 American physicist (b. Dec. 4, 1925, Baltimore, Md. d. June 5, 2005, Centreville, Va.), pioneered development of over the horizon radar for the U.S. Navy in the late 1950s. This innovation enabled early detection of Soviet ballistic… …
80Earth impact hazard — ▪ astronomy Introduction the danger of collision posed by astronomical small bodies whose orbits (orbit) around the Sun carry them near Earth. These objects include the rocky asteroids and their larger fragments and the icy nuclei of comets.… …
