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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.
The straight line, real or imaginary, passing through a rotating body and is the line about which that body rotates.
Industry:Astronomy
A measure for distances within the solar system, equal to the mean ditance of the earth from the sun, which is about 93,000,000 miles.
Industry:Astronomy
The gaseous envelope surrounding a celestial body.
Industry:Astronomy
The use of atmospheric drag to slow a spacecraft.
Industry:Astronomy
A measure of the ability of a body to reflect light.
Industry:Astronomy
The point in the orbit of a planet where it is farthest from the sun.
Industry:Astronomy
A "secondary rocket" intended to be used for descending to the surface of the moon or another planet while the major vehicle remains in an orbit around the destination body.
Industry:Astronomy
La quantità di materia in un corpo, che non deve essere confuso con peso. Lo stesso oggetto avrà diversi pesi nello spazio e la terra, ma la massa rimane costante.
Industry:Astronomy
Il punto sulla sfera celeste diametralmente opposto allo zenith, in modo che lo zenit, il nadir e il centro della terra siano in una linea retta. È sempre 90 gradi sotto l'orizzonte.
Industry:Astronomy
L'occultamento di un corpo celeste di un altro, come quando la Luna passa tra la terra e una stella, o quando una delle lune di Giove o Saturno passa dietro il pianeta.
Industry:Astronomy