A mental representation of a particular problem, including initial, final and possible intermediate states

The guidance operations needed to launch a spacecraft into orbit or space, navigate in space, and return to Earth or some other body

The determination of the three-dimensional position and velocity of a spacecraft (relative to a frame of reference)

(medicine) The branch of medicine that deals with the effects of space travel on human beings

Communication between space vehicles, or between such vehicles and a base on Earth, the Moon or other planet, especially when using high-frequency radio waves

A journey, by a human or robotic spacecraft, into space for a specific reason (normally to gather scientific data)

(computing) a parameter (in some file systems) that specifies the storage space required for a new file

(psychology) The awareness of the position, size, form, distance, and direction of an object, or of oneself

The competition between nations in the field of space exploration.

simple past tense and past participle of space out