Space is a unique physical domain challenging Allies’ traditional perceptions of time, distance and geography. It is generally considered to begin 90 – 100 km (the Karman line) above sea-level.

Space Technologies exploit or must contend with the unique operational environment of space, which includes: freedom of action, global field of view, speed, freedom of access; a near-vacuum; micro- gravity; isolation; and extreme environments (temperature, vibration, sound and pressure).