Orbital wheel — The orbital wheel was designed in 1990 by Dominique Mottas of the French Osmos company in an attempt to reduce the number of moving parts by removing the center shaft and hub of the wheel and relying upon a circular rim inserted inside the wheel… … Wikipedia
Launch vehicle — Satellite launch vehicle redirects here. For the Indian rocket, see Satellite Launch Vehicle A Russian Soyuz lifts off from the Baikonur Cosmodrome in Kazakhstan heading for the ISS In spaceflight, a launch vehicle or carrier rocket is a rocket… … Wikipedia
Gravity turn — A gravity turn or zero lift turn is a maneuver (see trajectory optimization) used in launching a spacecraft into, or descending from, an orbit around a celestial body such as a planet or a moon. This launch trajectory offers two main advantages… … Wikipedia
Pegasus rocket — Pegasus rockets are the winged space booster vehicles used in an expendable launch system developed by Orbital Sciences Corporation (Orbital). Three main stages burning solid propellant provide most thrust. The rocket is carried aloft below… … Wikipedia
Global Positioning System — GPS redirects here. For other uses, see GPS (disambiguation). Geodesy Fundamentals … Wikipedia
Solar 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… … Wikipedia
International Space Station — ISS redirects here. For other uses, see ISS (disambiguation). International Space Station … Wikipedia
Marshall Space Flight Center — George C. Marshall Space Flight Center Aerial view of the test area at MSFC … Wikipedia
MESSENGER — This article is about the NASA space mission. For other uses, see Messenger. MESSENGER Artist s rendering of MESSENGER orbiting Mercury. Operator NASA / APL Major contractors APL … Wikipedia
Optical tweezers — (originally called single beam gradient force trap ) are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch… … Wikipedia