plural of space hopper

The period from the about the time of the launch of Sputnik in 1957 to the present day, during which people ventured into space. / (attributive) Redolent of the space age; appearing futuristic or modern.

The space in an electron tube in which there is no modulated field

Alternative spelling of airspace

(military) The areas between a weapon and its target in which the trajectory is not greater than the typical height of a human (about 1.8 meters)

(mathematics) The vector space generated by all the column vectors of a matrix

(mathematics, physics) A space in which a generalization of quantum mechanics is described in terms of a system with a finite number of degrees of freedom

That part of an electron tube in which electrons interact with a modulated field

(mathematics, physics) A coordinate system (or a frame of reference) defined with respect to the distant stars, whose relative positions do not change over reasonably long periods of time

(mathematics) Any Riemann space in which the metric tensors are constants throughout