A journalist or other writer who is paid by the column inch.

Any weapon that travels through space to a target either in space, in the atmosphere or on the ground

Any form of research that takes place in space, or concerns any aspect of space or space travel

(astronomy) The velocity of a star relative to the Sun

(meteorology) Any phenomena related to the radiation and particles emitted by the Sun, especially in the vicinity of the Earth that may have an effect on the Earth or human activity in the space.

White area between written characters and graphic regions on a produced page or computer display; blanks and the vertical blank lines in between paragraphs, or other organized rows of text lines (poetry).

(topology, formally) An ordered pair (X, τ), where X is a set and τ, called the topology, is a collection of subsets of X which satisfies certain axioms and whose elements are called the open sets (or alternatively, for a different set of axioms, the closed sets);

(mathematics) A subset of Euclidean space in which tensors are used to describe distance, angle, and curvature

A narrow opening underneath the bottom of a building (or storey) used to give access to pipes, cables and other utilities

Any activity performed by an astronaut outside of a space vehicle in space.