Space flight

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

Klystron

Aerospace; Space flight

A microwave travelling wave tube power amplifier used in transmitters.

Kilogramme (kg)

Aerospace; Space flight

The SI base unit of mass, based on the mass of a metal cylinder kept in France. See also g (gram).

Keyhole

Aerospace; Space flight

An area in the sky where an antenna cannot track a spacecraft because the required angular rates would be too high. Mechanical limitations may also contribute to keyhole size. Discussed in depth ...

The mutual attraction of all masses in the universe. Newton's Law of Universal Gravitation holds that every two bodies attract each other with a force that is directly proportional to the product of ...