8 Terms
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Space flight
Of or relating to the act of voyaging outside the Earth's atmosphere and into outer space, and the science involved in achieving it.
Industry: Aerospace
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Space flight
Ellipse
Aerospace; Space flight
A closed plane curve generated in such a way that the sums of its distances from the two fixed points (the foci) is constant.
Ecliptic
Aerospace; Space flight
The plane in which Earth orbits the sun and in which solar and lunar eclipses occur.
Eccentricity
Aerospace; Space flight
The distance between the foci of an ellipse divided by the major axis.
Exa (E)
Aerospace; Space flight
A multiplier, x1018 from the Greek "hex" (six, the "h" is dropped). The reference to six is because this is the sixth multiplier in the series k, M, G, T, P, E. See the entry for CGPM.
Comets
Aerospace; Space flight
Small bodies composed of ice and rock in various orbits about the sun.
Conjunction
Aerospace; Space flight
A configuration in which two celestial bodies have their least apparent separation.
