interplanetary orbit
51Mars Express — CG image of Mars Express Operator ESA Mission type Orbiter + Lander Satellite of …
52Arthur C. Clarke — Arthur Clarke redirects here. For other uses, see Arthur Clarke (disambiguation). Sir Arthur C. Clarke, CBE Arthur C. Clarke at his home office in Colombo, Sri Lanka, 28 March 2005 Born 16 December 1917(1917 12 16) …
53Solar 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… …
54cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …
55Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
56Rocket — This article is about vehicles powered by rocket engines. For other uses, see Rocket (disambiguation). A Soyuz U, at Baikonur Site 1/5 A rocket is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engi …
57Project Orion (nuclear propulsion) — An artist s conception of the NASA reference design for the Project Orion spacecraft powered by nuclear propulsion. Project Orion was a study of a spacecraft intended to be directly propelled by a series of explosions of atomic bombs behind the… …
58Japan Aerospace Exploration Agency — 宇宙航空研究開発機構 Reaching for the skies, exploring space Owner  Jap …
59Magsat — Modeled Earth magnetic fields, data created by satellites with sensitive magnetometers Magsat (Magnetic Field Satellite, Explorer 61, Applications Explorer Mission 3 or AEM 3) spacecraft was launched in the fall of 1979 and ended in the spring of …
60astronomy — /euh stron euh mee/, n. the science that deals with the material universe beyond the earth s atmosphere. [1175 1225; ME astronomie ( < AF) < L astronomia < Gk. See ASTRO , NOMY] * * * I Science dealing with the origin, evolution, composition,… …
