- 行业: 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 line marking the apparent junction of Earth and sky. For the technical definition, please follow this link to the U.S. Naval Observatory's Astronomical Applications.
Industry:Aerospace
Interplanetary trajectory using the least amount of propulsive energy. See Chapter 4.
Industry:Aerospace
An antenna onboard of a spacecraft with a focused, narrow radiowave beam width. This narrow beam width allows more precise targeting of the radio signal - also known as a directional antenna.
Industry:Aerospace
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
