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 blanket made of a plastic material covered with a reflective metal agent; designed to reduce heat loss from a person's body following trauma, or used on the exterior of a spacecraft for thermal control.

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

(mathematics) any curve in three-dimensional space; includes any plane curve as a subset

(informal) Space debris.

Alternative spelling of spacelike

A crystal lattice

(informal) Confused, stupefied, or disoriented through the action of a narcotic drug (or as if so intoxicated).

(mathematical analysis) A measurable space which has a positive measure defined on its σ-algebra.

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