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space alien
(chiefly US) An extraterrestrial being; a visitor from outer space.
space aliens
plural of space alien
space exploration
Investigation of interplanetary or interstellar space, its properties, biology and the bodies that exist within it.
space invaders
plural of space invader
single-spaced
single-spaced
simple past tense and past participle of single-space
space flights
plural of space flight
absolute space
(physics) The Newtonian concept of an unchanging and unchangeable reference system of spatial (and temporal) coordinates that is the same for all observers
regular space
(topology) A Hausdorff space with the additional property that for every closed set of that space and every point disjoint from that set, there are a disjoint pair of open sets which contain the closed set and the point, respectively.
normal space
(topology) A regular space with the additional property that for every disjoint pair of closed sets in that space, there is a disjoint pair of open sets which contain the closed sets, respectively.
