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National Aeronautics and Space Administration
Industria: 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.
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As in going below the horizon, for the technical definition, please follow this link to the U.S. Naval Observatory's Astronomical Applications.
Industry:Aerospace
The SI base unit of time. See this extensive definition.
Industry:Aerospace
Half the distance of an ellipse's maximum diameter, the distance from the center of the ellipse to one end.
Industry:Aerospace
Time, the time counter clock onboard a spacecraft.
Industry:Aerospace
Sixth planet from the sun, a gas giant or Jovian planet.
Industry:Aerospace
A range of microwave radio frequencies in the neighborhood of 2 to 4 ghz.
Industry:Aerospace
A small body which orbits a larger one. A natural or an artificial moon. Earth-orbiting spacecraft are called satellites. While deep-space vehicles are technically satellites of the sun or of another planet, or of the galactic center, they are generally called spacecraft instead of satellites.
Industry:Aerospace
A radar whose defining characteristic is its use of relative motion between an antenna and its target region to provide distinctive long-term coherent-signal variations that are exploited to obtain finer spatial resolution than is possible with conventional beam-scanning means.
Industry:Aerospace
A packaged interconnected assembly of solar cells, also known as photovoltaic cells. The solar panel can be used as a component of a larger photovoltaic system to generate and supply electricity to a spacecraft.
Industry:Aerospace
The angular distance of a celestial object measured in hours, minutes, and seconds along the celestial equator eastward from the vernal equinox.
Industry:Aerospace