gravitational propulsion
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Gravitational shielding — The term gravitational shielding refers to a hypothetical process of shielding an object from the influence of a gravitational field. Such processes, if they existed, would have the effect of reducing the weight of an object. All experimental… … Wikipedia
Gravitational tractor — In asteroid deflection, a gravitational tractor is a way to use the gravitational attraction between a spaceship and an asteroid to modify its trajectory to prevent it from colliding with the Earth. In the plan, the spaceship hovers above the… … Wikipedia
Gravitational keyhole — A gravitational keyhole, or resonance keyhole, is a small region of space that if an asteroid were to pass through it, its course would be altered due to Earth s gravity in a way that could cause such an asteroid to collide with the Earth on its… … Wikipedia
United States gravity control propulsion research (1955 - 1974) — American interest in gravity control propulsion research intensified during the early 1950s. Literature from that period used the terms anti gravity, anti gravitation, baricentric, counterbary, electrogravitics, G projects, gravitics, gravity… … Wikipedia
Spacecraft 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… … Wikipedia
Breakthrough Propulsion Physics Program — The Breakthrough Propulsion Physics Project (BPP) was a research project funded by NASA from 1996 through 2002, to study various proposals for revolutionary methods of spacecraft propulsion which would require breakthroughs in physics before they … Wikipedia
Jet Propulsion Laboratory Developmental Ephemeris — The Jet Propulsion Laboratory Developmental Ephemeris (JPL DE) is a product of the Jet Propulsion Laboratory in Pasadena, California. This ephemeris is a system of numerical coefficients (for Chebyshev polynomials) which can be used to calculate… … Wikipedia
Anti-gravity — Antigrav redirects here. For the EyeToy video game, see EyeToy: AntiGrav. Anti gravity is the idea of creating a place or object that is free from the force of gravity. It does not refer to the lack of weight under gravity experienced in free… … Wikipedia
Space elevator — A space elevator for Earth would consist of a cable anchored to the Earth s equator, reaching into space. By attaching a counterweight at the end (or by further extending the cable upward for the same purpose), the center of mass is kept well… … Wikipedia
locomotion — /loh keuh moh sheuhn/, n. the act or power of moving from place to place. [1640 50; see LOCOMOTIVE, MOTION] * * * Any of various animal movements that result in progression from one place to another. Locomotion is classified as either… … Universalium
