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 observation of spacecraft or phenomenon in space
Relating to creating, testing, and refining technology for spacecraft.
Questions concerning the use, design, and operation of electrically powered thrusters, such as ion, Hall Effect, magnetoplasmadynamic, and VASIMR thrusters, which use electrical power and electric or …
For questions related to Elon Musk's Midnight Cherry Tesla Roadster (and its "pilot", an empty SpaceX suit named Starman), launched as the payload on the inaugural Falcon Heavy flight on February 6, 2…
Questions related to structure, operations, missions, and facilities of the European Space Agency, an intergovernmental organization of 20 European states and Canada.
How to calculate things directly related to Space Exploration as defined in the help center, or how the calculations have been done in the past or will be done in the future.
Questions about technologies used to protect reentering space craft from the heat of friction from the atmosphere. May also refer to technologies used to block heat from solar radiation while in the v…
Questions regarding a 'sail' that can be attached to spacecraft to harness the sun's radiation to propel a ship in one direction or another.
An orbital maneuver to transfer between two circular orbits consisting of one burn to enter the transfer orbit and one to circularize in the final orbit.
Equation stating that the change in velocity (delta-v) of a single stage rocket is equal to the exhaust velocity times the natural log of the ratio of final to initial mass, named after Russian scient…
Questions about the use of the Python programming language for projects directly related to Space Exploration as defined in the help center.
Questions about heat management in spacecraft
Questions regarding space activities or services performed by private entities for commercial interests/the gain of money.
Artificial gravity is the varying (increase or decrease) of apparent gravity via artificial means, particularly in space, but also on Earth.
Refers to questions concerning the solar system containing Earth. For other solar systems, use the 'planetary-system' tag.
Questions regarding NASA latest manned spacecraft program currently under development. Orion spacecraft will be used for missions beyond Earth orbit. For questions related to the Project Orion (propul…
Questions on spacecraft propulsion techniques that are either theoretical or not yet at a high technology readiness level.
A booster is a type of rocket used to assist in putting larger payloads into orbit. Use with the [rocket] tag any any other relevant launch vehicle tags
The speed needed to "break free" of the gravitational attraction of a body without spending more propellant.
Questions relating to the exploration of Titan, a moon of Saturn.
Questions regarding systems of or relating to armed forces.
Questions regarding the process of bringing a mission to an early stop, often due to an emergency or unforeseen circumstances.
Questions regarding consumption and production of oxygen
use of space exploration or space-access technology for primarily artistic purposes
Questions about sets of data used to determine a unique point in a given space, e.g. (degrees North, degrees East) for geographic coordinates
Questions regarding the solid rocket boosters used to propel spacecraft, often during launch.
Questions regarding the mass of spacecraft or other objects
Questions regarding flyby in which the spacecraft flies near celestial object in a hyperbolic path for scientific explorations. Such flybies may also be made to increase velocity or reduce the velocit…
Questions which relate to how spacecraft and rockets navigate and stay on course.
Questions relating to the JPL Horizons solar system data and ephemeris computation service
Questions regarding the hardware, development, use and cost of rocket fairings and protective shells.
Questions about the General Mission Analysis Tool, the program which is designed to model, optimize, and estimate spacecraft trajectories in flight regimes ranging from low Earth orbit to lunar applic…
Questions regarding surface features of celestial bodies.
Questions about specific impulse (Isp), which is a comparative measure of efficiency of rocket, jet engines and used propellants, measured either in seconds of thrust per unit weight of propellants, o…
Questions regarding the steps and procedures taken prior and during the launch of a space vehicle.
Questions regarding the movements and interactions of astronomical bodies as it relates to spacecraft, their trajectories, and their maneuvers. For the motion of spacecraft themselves, see [orbital-me…