- 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 hiding of one heavenly body by another, as when the moon passes between earth and a star, or when one of the moons of jupiter or saturn passes behind the planet.
Industry:Astronomy
Anything that a flight vehicle carries beyond what is required for its operation during flight.
Industry:Astronomy
(1) a sun with respect to its planets, or a planet with respect to its satellites; (2) the brighter member of a double star system.
Industry:Astronomy
Two bodies are in quadrature when their difference in celestial longitude is 90 degrees. This is the position of a superior planet when its elongation is 90 degrees, east or west, depending on the direction of the planet from the sun.
Industry:Astronomy
Backward (westward) motion of the planet among the stars, resulting from the fact that it is viewed from the moving earth. It is the motion that a planet has when its right ascension is decreasing. Each year, when Earth passes a superior planet, such as Mars, the planet appears to move backward for a short time. It is the same effect you see when two trains are running in the same direction on side by side tracks. The slower train appears to be moving backward.
Industry:Astronomy
A measure of a system's ability to control a robot's tool tip.
Industry:Astronomy
1. An instrument that provides its data readout to a location remote from the sensing device; 2. To transmit data to a remote point.
Industry:Astronomy
The point in a planet's orbit in which it is closest to earth. When viewing a planet it will appear on the opposite side of the sky as the sun. Two bodies are in opposition when the difference in celestial longitude is 180 degrees.
Industry:Astronomy
