13 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
Add a new termContributors in Space flight
Space flight
astronomical unit (AU)
Aerospace; Space flight
Based on the mean Earth-to-sun distance, 149,597,870 km. Refer to "Units of Measure" section for complete information.
astronomical twilight
Aerospace; Space flight
For technical definition, please follow this link to the U.S. Naval Observatory Astronomical Applications website.
argument of periapsis
Aerospace; Space flight
The argument (angular distance) of periapsis from the ascending node.
ascending node
Aerospace; Space flight
The point at which an orbit crosses a reference plane (such as a planet's equatorial plane or the ecliptic plane) going north.
