- 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.
Transmission of heat by moving heated gases. In a hot-air furnace the heated air rises and cooler, heavier air falls.
Industry:Astronomy
The distance from one side of a body to the other, measured through the center.
Industry:Astronomy
The apparent daily rotation of the heavens from east to west; an effect of earth's rotation about its axis.
Industry:Astronomy
The degree of flattening of an ellipse and how much it deviates from a circular shape. With reference to the orbit of a planet, the distance between the center of its orbit and the center of the primary about which it revolves.
Industry:Astronomy
The speed that any object must acquire in order to escape from a planet's gravitation.
Industry:Astronomy
The study of the size and shape of earth, the measurement of terrestrial gravitational forces, and the location of fixed points on earth's surface.
Industry:Astronomy
A great circle of the celestial sphere passing through the celestial poles and a celestial body or the vernal equinox. An hour circle moves with the body as the celestial sphere rotates, unlike the celestial meridian of a point that remains fixed.
Industry:Astronomy
The great circle of the celestial sphere all points of which are 90 degrees from the poles. It is the plane of the earth's equator projected onto the celestial sphere.
Industry:Astronomy
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
