- Industry: Aerospace
- Number of terms: 16933
- Number of blossaries: 2
- Company Profile:
The Executive Branch agency of the United States government, responsible for the nation's civilian space program and aeronautics and aerospace research.
The space within the boundary of the heliopause, containing the sun and solar system.
Industry:Aerospace
The boundary theorized to be roughly circular or teardrop-shaped, marking the edge of the sun's influence, perhaps 100 AU from the sun.
Industry:Aerospace
A spacecraft's pattern of controlled drift about an unstable Lagrange point (L1 or L2 for example) while in orbit about the primary body (e.g. The Sun).
Industry:Aerospace
A technique which uses very high-power X and S-band transmitters at DSS 14 to illuminate solar system objects for imaging.
Industry:Aerospace
An imaginary circle on the surface of a sphere whose center is at the center of the sphere.
Industry:Aerospace
Certain dynamical features in a planet's atmosphere (not to be confused with gravitational waves, see above).
Industry:Aerospace
Technique whereby a spacecraft takes angular momentum from a planet's solar orbit (or a satellite's orbit) to accelerate the spacecraft, or the reverse. See Chapter 4.
Industry:Aerospace
Einsteinian distortions of the space-time medium predicted by general relativity theory (not yet directly detected as of March 2010). (Not to be confused with gravity waves.)
Industry:Aerospace
The mutual attraction of all masses in the universe. Newton's Law of Universal Gravitation holds that every two bodies attract each other with a force that is directly proportional to the product of their masses, and inversely proportional to the square of the distance between them. This relation is given by the formula at right, where F is the force of attraction between the two objects, given G the Universal Constant of Gravitation, masses m1 and m2, and d distance. Also stated as Fg = gmm/r2 where Fg is the force of gravitational attraction, M the larger of the two masses, m the smaller mass, and r the radius of separation of the centers of the masses. See also weight.
Industry:Aerospace
