braking orbit
11Spacecraft propulsion — A remote camera captures a close up view of a Space Shuttle Main Engine during a test firing at the John C. Stennis Space Center in Hancock County, Mississippi Spacecraft propulsion is any method used to accelerate spacecraft and artificial… …
12Spaceflight — For the magazine published by the British Interplanetary Society, see Spaceflight (magazine). For the 1985 PBS documentary series narrated by Martin Sheen, see Spaceflight (TV series). For the Sam Lazar album, see Space Flight (album). Part of a… …
13Soyuz-TMA — The Soyuz TMA (T транспортный Transportnyi meaning transport, M модифицированный Modifitsirovannyi meaning modified, A антропометрический, Antropometricheskii meaning anthropometric) design is the most recent revision of the Soyuz spacecraft used …
14Cluster (spacecraft) — Cluster Operator European Space Agency in international collaboration with NASA Major contractors Dornier GmbH (now part of EADS) Mission type Orbiter Satellite of Earth …
15Solar sail — Solar sails (also called light sails or photon sails, especially when they use light sources other than the Sun) are a proposed form of spacecraft propulsion using large membrane mirrors. Radiation pressure is about 10 5 Pa at Earth s distance… …
16Project Mercury — Duration 1959 1963 Goal Place Americans into orbit for as long as one day Achievements First manned flight: May 5, 1961 First orbital flight …
17Venus — This article is about the planet. For other uses, see Venus (disambiguation). Venus   …
18meteor and meteoroid — ▪ astronomy Introduction respectively, a glowing streak in the sky (meteor) and its cause, which is a relatively small stony or metallic natural object from space (meteoroid) that enters Earth s atmosphere and heats to incandescence. In modern… …
19Mars program — This article is about the Soviet program. For other Mars exploration programs, see Exploration of Mars. The Mars program was a series of unmanned spacecraft launched by the Soviet Union between 1960 and 1973. The spacecraft were intended to… …
20Mars probe program — This article is for the Russian (Soviet) series of space probes; for the moon designated as Mars II, see Deimos (moon); for all missions to Mars, see Exploration of Mars. The Mars program was a series of Mars unmanned landers and orbiters… …
