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.
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 regarding the Curiosity rover launched by NASA for the purpose of Mars exploration.
Lagrangian points (also Lagrange points, L-points, or libration points) are the five positions (L1 - L5) surrounding two celestial bodies where gravitational pull of the two large mass bodies provides…
Questions on the subject of missions to the Lunar surface - past, present, and future
Topics that relate to orbit determination and flight path control. May also be used for navigation on the surface of celestial objects.
Questions regarding the amount of money required to perform or sustain space exploration.
Questions regarding the absence of significant gravitational force.
Questions about engines used in space that accelerate ions to create thrust.
Questions regarding the use of an object's gravity to change the velocity of a spaceship.
Questions about orbits whose position in the sky remains the same for a stationary observer on the primary body.
Questions regarding visual impressions of objects or instruments used to capture visual impressions.
Force produced by pushing against a reaction mass in space à la Newton's third law: "For every action there is an equal and opposite reaction." The thrust of a rocket engine is the forward force produ…
Questions of the science and space exploration related to Earth.
Questions about research and use of water in space environment
Sensors, systems, strategies, algorithms and mathematics relating to BOTH determining AND controlling the attitude (3D orientation) of spacecraft.
Questions about the exploration of the planet Jupiter.
Questions regarding energy used to operate a mechanical or electrical device.
Questions regarding effects on health by activities, prolonged stay, or exposure to environmental elements in space, celestial bodies, or space stations. Predominantly questions pertaining to health o…
Questions regarding extremes or records, such as the smallest, largest, first, last, heaviest, etc. of a thing or event.
A telescope placed in space, typically for the purpose of avoiding atmospheric distortion, background light, and attenuation of light by the atmosphere.
SpaceX's second version of the Dragon spacecraft, also called "Crew Dragon". It is designed to carry humans.
Questions regarding devices used to make a controlled descent and touchdown onto another object, usually either to transfer objects, or perform scientific observations.
Questions regarding systems used to continually locate objects, often radar.
the effect on a spacecraft of moving through atmosphere, how its density, pressure, temperature, flow velocity, and viscosity affect a craft, and how lift and drag can be used to modify that.
representation of environment or process in a more accessible form using virtual or physical imitation or analogues, often for the purpose of training or testing, includes both real-world (physical) a…
Questions about the procedure of using a piece of equipment to find imperfections or problems.
Questions regarding computer programs used in space exploration.
Questions regarding atmospheric drag which includes the resistance offerd by a moving object in fluid
Should be used whenever one specific online resource or printed book/tech.report/article or other space exploration-related media is required. Care should be taken to avoid asking for broad, open-ende…
questions about the observation of the planet Earth from space, usually for scientific, technical, or other well-defined reasons, or about the spacecraft that do this. This tag is usually used for sys…
The country of Russia is what remains of the former Soviet Union (Of which Russia was a province/state). The Russian/Soviet space program has been quite expansive and capable over many decades. Curr…
Questions regarding living organisms, searches for life, or human life in space.
Questions relating to the use of technology to further space exploration.
First or earliest instances of a notable event, implementation, or technological achievement related to spaceflight. Use the record tag instead for questions of the class fastest, smallest etc. as the…
New Horizons is NASA's space probe launched in early 2006 towards the dwarf planet Pluto as the first spacecraft to fly by and study this Kuiper Belt Object (KBO) and its moons, Charon, Nix, Hydra, Ke…
Questions regarding the artificial creation of Earth-like conditions on another celestial body.