A range of microwave radio frequencies in the neighborhood of 12 to 40 GHz, used for high speed data transmission on shuttle flights (~15 Ghz).

Scale of temperature named after the English physicist Lord Kelvin, based on the average kinetic energy per molecule of a perfect gas. Absolute zero is equivalent to -273.16^oC (-459.4^oF).

A mixture of hydrocarbons distilled from crude petroleum; see RJ-1, RP-1.

Kilohertz, equal to 1,000 Hertz.

The standard unit of mass in the metric system.

An object's energy of motion; for example, the force of a falling body.

Russian name for "space tug".

Russian name for "spaceplane".

Kennedy Space Center (Florida).

Kilotonne, equal to 1,000 tonnes.

A swarm of cometary bodies thought to orbit the Sun beyond Neptune at distances between 30 and 50 AU.