plural of space defense

(mathematics) A topological space that is the quotient of a free action (of the specified group) on a weakly contractible space.

(mathematics) A map from a topological space onto another by local homeomorphisms of disjoint preimages. / (mathematics, informal) The space so mapped.

A hostile alien from outer space.

Blank lines inserted into a message posted on the Internet so that the reader can choose whether or not to scroll down and read a spoiler.

Investigation of interplanetary or interstellar space, its properties, biology and the bodies that exist within it.

plural of Space Shuttle

(informal) A place where one may crash (stay informally).

plural of space velocity

plural of space station