For questions about the process of traveling through space, including in orbit around a planet or moon. Consider also [spaceships]. See also the tag information (click "info") for more details on when this tag applies.
Spaceflight deals with the process of travelling through space in a directed manner such as with engines or solar sails as a form of propulsion, as opposed to orbiting celestial bodies or drifting aimlessly. It also deals with orbiting celestial bodies when that is done as part of a larger mission.
Generally, the purpose of spaceflight is to travel between celestial bodies, be they a planet and its moon(s) or planets in a solar system, or even between different star systems.
Also consider the spaceships tag, for questions about the technology itself rather than the process of travelling through space.