the atmosphere and outer space considered together or as a whole.

the sector of industry that designs and builds aircraft, rockets, missiles, and devices or vehicles intended to operate in outer space.

the atmosphere surrounding the earth and extending to outer space and as an adjective the industries that create the space program that do research in that area Aerospace is a rapidly developing professional area combining science and engineering. Finding water on Mars is an important development for the aerospace industry.

() the science of the Earth's atmosphere and outer space