braking orbit
51Luna 21 — (Ye 8 series) was an unmanned space mission of the Luna program, also called Lunik 21. The Luna 21 spacecraft landed on the Moon and deployed the second Soviet lunar rover (Lunokhod 2). The primary objectives of the mission were to collect images …
52Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
53Timeline of Russian inventions and technology records — The Hall of Space Technology in the Tsiolkovsky State Museum of the History of Cosmonautics, Kaluga, Russia. The exhibition includes the models and replicas of the following Russian inventions: the first satellite, Sputnik 1 (a ball under the… …
54Venera 11 — Infobox Spacecraft Name = Venera 11 Caption = Venera 11 lander Organization = USSR Major Contractors = Mission Type = Flyby and Lander Satellite Of = Venus Flyby Date = December 25, 1978 Launch = 9 September, 1978 at 3:25:39 UTC Launch Vehicle =… …
55Lunokhod 2 — was the second of two unmanned lunar rovers landed on the Moon by the Soviet Union as part of the Lunokhod program.*Launch Date/Time: 1973 01 08 at 06:55:38 UTC *On orbit dry mass: 4850 kg (4.77 long tons)The Luna 21 spacecraft landed on the Moon …
56Pulsar — Pulsars are highly magnetized rotating neutron stars that emit a beam of electromagnetic radiation in the form of radio waves. Their observed periods range from 1.4 ms to 8.5 s. [ M.D. Young, R.N. Manchester and S. Johnston. A radio pulsar with… …
57Doom novels — For the novelization of the film, see Doom (film). Cover for the first Doom novel, Knee deep in the Dead The Doom novel series is a series of four near future science fiction novels co written by Dafydd ab Hugh and Brad Linaweaver; Knee Deep in… …
58radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …
59Maglev — JR Maglev at Yamanashi, Japan test track in November 2005 …
60Air France Flight 358 — The wreckage of Flight 358 Runway overrun summary Date …
