- 업종: 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 gas used by all green plants and recycled by them to form wood and the oxygen we breathe. In very large quantities it can be poisonous to animal life.
Industry:Astronomy
The distance from one side of a body to the other, measured through the center.
Industry:Astronomy
The amount of matter in a unit volume of a substance; usually the mass per unit of volume.
Industry:Astronomy
The invisible electromagnetic radiation beyond the violet end of the spectrum of visible light, of wavelengths ranging, roughly, from 4000 down to 400 angstroms.
Industry:Astronomy
The position on the celestial sphere occupied by the sun on or about march 21 when its path on the ecliptic crosses the celestial equator going from south to north. This point is also called the march equinox and the first point of aries.
Industry:Astronomy
The position on the ecliptic occupied by the sun about december 22 when it reaches its greatest southerly declination.
Industry:Astronomy
Very short wavelength radiations beyond the ultraviolet in the spectrum, which are about one ten-thousandth as long as the visible violet and are extremely penetrating.
Industry:Astronomy
The hypothetical primordial matter, proposed by george gamow, from which the chemical elements may have been formed.
Industry:Astronomy
