Spaceflight concepts

concept of permanent colonies outside of the astronomical body of origin – especially human settlements outside Earth

spacecraft which descends toward and comes to rest on the surface of an astronomical body

spaceflight where spacecraft leaves the astronomical body but doesn't reach orbit

term used for hypothetical crewed or uncrewed transport between star systems

time period during which a rocket must launch to reach its target

spaceflight between planets

thumbnail|2015 FIFA Women's World Cup countdown at [[Champlain Place, Dieppe, New Brunswick]] A countdown is a sequence of backward counting to indicate the time remaining before an event is scheduled to occur. NASA commonly employs the terms "L-minus" and "T-minus" during the preparation for and anticipation of a rocket launch, and even "E-minus" for events that involve spacecraft that are already in space, where the "T" could stand for "Test" or "Time", and the "E" stands for "Encounter", as with a comet or some other space object, like a spacecraft.

flight event at some distance from the object

spaceflight where spacecraft orbits astronomical body

experience of seeing the reality and fragility of the Earth in space

thumb|Apollo 15 makes contact with the Pacific Ocean. thumb|Locations of Atlantic Ocean splashdowns of American spacecraft prior to the 21st century thumb|Locations of Pacific Ocean splashdowns of American spacecraft

astronomy file format

spaceflight maneuver

device that senses the direction to one or multiple stars

spacecraft component controlling orientation

long cables which move satellites in space

the science of aircraft and spacecraft design

uncrewed orbital fuel station

entry into a stable orbit around an astronomical object

A statite (a portmanteau of the words static and satellite) is a hypothetical type of artificial satellite that employs a solar sail to continuously modify its orbit in ways that gravity alone would not allow. Typically, a statite would use the solar sail to "hover" in a location that would not otherwise be available as a stable geosynchronous orbit. Statites have been proposed that would remain in fixed locations high over Earth's poles, using reflected sunlight to counteract the gravity pulling them down. Statites might also employ their sails to change the shape or velocity of more conventi

spacecraft instrument that senses the direction to the Sun

branch of astronomy, astronautics and space technology

preposed Method Of Moon Landing

Solar system object is on the opposite side of the Sun from the Earth

Mars exploration mission type pushing for the installation of a permanent colony

phase of a spacecraft mission

ground-based elements of a spacecraft system

hypothetical scientific object

contingency operating mode of a spacecraft in which non-essential systems are shut down and vehicle preservation is the top priority

earliest phase of a flight that reaches space

thumb|500px|Phases of a skip reentry Boost-glide, or skip-glide, is a class of atmospheric entry trajectories that follow a non-ballistic trajectory by employing aerodynamic lift in the high upper atmosphere. The term is mostly used to refer to a number of designs that used lift to extend the range of an otherwise shorter-ranged rocket.

orbit for an artificial satellite in which natural drifting due to the central body's shape has been minimized by careful selection of the orbital parameters

spacecraft launch or descent maneuver

spacecraft trajectory that encounters Earth and Mars regularly

the science of space vehicle performance, stability, and control.

thumb|The "energy flash" of a hypervelocity impact during a laboratory simulation of what happens when a piece of orbital debris hits a spacecraft in orbit thumb|The aftermath of a hypervelocity impact, with a projectile the same size as the one that impacted for scale

area of uncertainty of a spacecraft's landing zone

feasibility study of space missions to interstellar objects