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National Aeronautics and Space Administration
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.
A direct, circular, low inclination orbit about the Earth having a period of 23 hours 56 minutes 4 seconds.
Industry:Aerospace
Encompasses DSN, GCF, DSMS, and project data processing systems.
Industry:Aerospace
A geosynchronous equatorial circular orbit. Also called Clarke orbit.
Industry:Aerospace
Facilities that provide data and voice communications between JPL and the three dsccs.
Industry:Aerospace
Electromagnetic radiation in the neighborhood of 100 femtometers wavelength.
Industry:Aerospace
One of billions of systems, each composed of numerous stars, nebulae, and dust.
Industry:Aerospace
The four large satellites of Jupiter so named because Galileo discovered them when he turned his telescope toward Jupiter: Io, Europa, Ganymede, and Callisto.
Industry:Aerospace
Unit of gravity field measurement corresponding to a gravitational acceleration of 1 cm/sec2.
Industry:Aerospace
A thousandth of the metric standard unit of mass (see kg). The gram was originally based upon the weight of a cubic centimeter of water, which still approximates the current value.
Industry:Aerospace
Constant at any given place, the value of g varies from object to object (e.g. Planets), and also with the distance from the center of the object. The relationship between the two constants is: g = GM/r2 where r is the radius of separation between the masses' centers, and M is the mass of the primary body (e.g. A planet). At Earth's surface, the value of g = 9.8 meters per second per second (9.8m/s2). See also weight.
Industry:Aerospace