return orbit
41comet — cometary /kom i ter ee/, cometic /keuh met ik/, cometical, adj. cometlike, adj. /kom it/, n. Astron. a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and… …
42Atmospheric reentry — refers to the movement of human made or natural objects as they enter the atmosphere of a planet from outer space, in the case of Earth from an altitude above the edge of space. This article primarily addresses the process of controlled reentry… …
43Mars Observer — Artist rendering of Mars Observer in orbit around Mars. Operator NASA / JPL …
44Mir — This article is about the Soviet/Russian space station. For other uses, see Mir (disambiguation). Mir …
45Mars Express — CG image of Mars Express Operator ESA Mission type Orbiter + Lander Satellite of …
46Exploration of Mars — Viking Lander 2 site May 1979 Viking Lander 1 site February 1978 The exploration of Mars has been an importan …
47Hayabusa — This article is about the spacecraft. For other uses, see Hayabusa (disambiguation). Hayabusa A computer rendering of Hayabusa above Itokawa s surface Operator …
48Colonization of the Moon — Lunar outpost redirects here. For NASA s plan to construct an outpost between 2012 and 2024, see Lunar outpost (NASA). Moonbase redirects here. For other uses, see Moonbase (disambiguation). 1986 artist concept The colonization of the Moon is the …
491971 in spaceflight — |13 January, 20:10 GMT |flagicon|CANBlack Brant II |flagicon|CANFort Churchill |flagicon|CANNRCC |NRCC |Sub orbital |Aeronomy |13 January 1971 |Successful |21 January, 02:32 GMT |flagicon|CANBlack Brant VB |flagicon|CANFort Churchill… …
50Mars 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… …
