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Aerospace
Industry that includes methods of travel and spacecraft for navigating the air or space.
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Aerospace > Space flight 
rise
Aerospace; Space flight
As in ascending above the horizon, for the technical definition, please follow this link to the U.S. Naval Observatory's Astronomical Applications.
retrograde
Aerospace; Space flight
Orbit in which the spacecraft moves in the opposite direction from the planet's rotatation. See prograde.
refraction
Aerospace; Space flight
The deflection or bending of electromagnetic waves when they pass from one kind of transparent medium into another.
reflection
Aerospace; Space flight
The deflection or bouncing of electromagnetic waves when they encounter a surface.
circular polarization (CP)
Aerospace; Space flight
Circular polarization of an electromagnetic wave is a polarization where the tip of the electric field vector, at a fixed point in space, describes a circle as time progresses. If ...
radian
Aerospace; Space flight
Unit of angular measurement equal to the angle at the center of a circle subtended by an arc equal in length to the radius. Equals about 57.296 degrees.
Sub-categories
- Control systems (1744)
- Satellites (11359)
- Space flight (8863)
- Space shuttle (354)