A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
Questions regarding the path that a spacecraft will take due to forces acting on the spacecraft, such as gravitational or radiation from the sun.
Questions regarding SpaceX's Starship, formerly the Big Falcon Rocket (BFR) upper stage or BFS
Questions about alternative designs the asker has thought of, such as "why was X built this way and not this way"
Questions about debris in space, often in Earth orbit. Usually referring to nonoperational man-made satellites or parts of satellites.
Type of satellite in the shape of a cube 10 cm on each side. Popular with academics and amateurs with a focus on off-the-shelf components.
Questions on ascertaining, predicting, and controlling spatial orientation and rotation of spacecraft, and on forces that affect spatial orientation.
Questions regarding the spacesuits that astronauts wear whilst in space
Questions regarding the reuse of parts or equipment.
Questions about impact of radiation on space exploration.
Questions about asteroids, bodies in the solar system smaller then planets which orbit the sun.
Questions about satellites designed to aid in communications, such as phone, TV and Internet satellites.
Orbital elements are a set of parameters that uniquely identify a specific orbit.
Questions regarding words and abbreviations used in the fields of spaceflight and space exploration, and their meaning when used in those contexts.
Questions explicitly involving numerical analysis.
Questions regarding travel on a cosmic scale, from one star to another.
Questions regarding spacecraft designed to travel between planets.
SpaceX's heavy lift launcher, based on the Falcon 9, using two strap-on boosters with a center core.
A space station (or orbital station) is a spacecraft capable of supporting a crew, which is designed to remain in space (most commonly in low Earth orbit) for an extended period of time. For questions…
Questions on obtaining electrical energy from the light of the Sun through either direct photovoltaic conversion or thermal conversion.
Using radio wavelengths to communicate between multiple spacecraft or between a spacecraft and the Earth.
Questions regarding the second planet from the Sun.
Questions regarding the Soyuz manned spacecraft used by the Soviet and Russian space program.
Perseverance is a NASA Mars rover launched in July 2020 and landed in Jezero crater in February 2021. Use with the [mars] tag when asking about the environment it's in. Use with [ingenuity] when askin…
Questions regarding missions or parts of missions which were not successful.
Questions pertaining to materials used for construction of space-worthy objects.
Literal meaning is "change in velocity". The quantity has utility in rocketry as measure of the change in velocity that a reaction engine must produce to move into a given trajectory. The rocket equ…
Questions on taking images in space or of spacecraft.
Questions about a craft used to propel payloads into space, usually a rocket-powered vehicle
Questions regarding rocket propellant in liquid form, the main type used for chemical rockets.
Questions on launch complexes, spaceports or other locales for the launch of spacecraft.
Questions about deep space travel and observations that are related to the distance between the object in question and the Earth. For example, questions about communications delay, radial resolution, …
The Voyager program is an American scientific program that launched two unmanned space missions, the probes Voyager 1 and Voyager 2. Although they were designated officially to study just the planetar…
Questions regarding space exploration safety issues and procedures.
Extra-Vehicular Activity (EVA, or sometimes called "spacewalking") involves donning a space suit and leaving whatever vehicle you are in. Common reasons are repairing or maintaining said vehicle, but …
Questions pertaining to the launch vehicle developed by Wernher von Braun's team under Arthur Rudolph's supervision at Marshall Space Flight Center for carrying astronauts to the Moon. Saturn V (or C-…
Questions regarding the Curiosity rover launched by NASA for the purpose of Mars exploration.