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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.

Contributors 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.

aten

Aerospace; Space flight

A class of Earth-crossing asteroid.

asteroids

Aerospace; Space flight

Small bodies composed of rock and metal in orbit about the sun.

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.

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