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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 living organisms, searches for life, or human life in space.
121 questions
Questions regarding the artificial creation of Earth-like conditions on another celestial body.
121 questions
Questions relating to the use of technology to further space exploration.
121 questions
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…
120 questions
Questions regarding the rocket engine nozzles, semi-open compartments of various shapes and sizes into which propellant components are injected by their own pressure or with a help of a turbine, often…
120 questions
Questions regarding the amount of heat energy in an environment, as well as how to measure it.
119 questions
Relating to treaties, laws, ownership and disputes during the exploration of space. For non-space exploration related law questions, see our sister site Law Stack Exchange.
119 questions
Questions about Starlink, the satellite constellation developed by SpaceX to provide global broadband Internet
119 questions
Questions regarding the Sun, or Sol in Latin, the star at the center of the solar system Earth is in.
117 questions
Questions regarding equipment or other material to be transported during space exploration.
115 questions
Questions about the process and equipment used to join two spacecraft together.
115 questions
Questions regarding vertical rocket launch platforms and facilities in their immediate vicinity supporting final preparations for a rocket launch.
115 questions
Questions regarding the use of nuclear devices in space exploration, e.g. to power or propel spacecraft.
114 questions
The Space Launch System (SLS) is NASA's rocket replacement for the Space Shuttle for large payloads. Use for questions about the vehicle and the launching of any payloads.
113 questions
How passage of time impacts space exploration activities.
112 questions
Questions regarding fields of magnetisms and their effects on Space Exploration, such as the Earth's magnetic field.
112 questions
Missions expected to happen over the next decade, but that have not launched yet. In particular if such is only a concept at this time.
112 questions
Set of values carefully prepared to be used together with a simplified perturbations model (most often SGP4) to predict satellite positions with a moderate level of accuracy for times near the epoch c…
111 questions
Questions about imagery devices on spacecraft and probes.
107 questions
Questions regarding the Global Positioning System's satellites and uses.
106 questions
Questions about devices which collect and couple electromagnetic signals (communications, radar or other electromagnetic measurements) directly between free space, and conductors (e.g. waveguides or o…
106 questions
Apollo 11 landed the first humans, Neil Armstrong and Buzz Aldrin, on the surface of the Moon on July 20, 1969.
104 questions
Questions regarding how astronauts live in space, including day to day activities, chores, etc.
104 questions
The Soviet Union was a world power and major player in the space race. It dissolved in 1991 into individual states, the largest of which is the Russian Federation.
101 questions
Questions regarding the application of chemistry in space exploration, for example the composition of rocket propellants.
100 questions
SpaceX cargo capsule for lifting payloads to orbit. Launched on a Falcon 9 rocket. Use [dragon-v2] for the Crew Dragon version of this project.
100 questions
Questions about Indian Space Research Organization (ISRO), its missions, research projects, and other activities financed, organized, planned, managed, or otherwise arranged under this organization's …
100 questions
Questions addressing the energy requirement for space/orbit/interplanetary missions.
100 questions
Can refer to both electrical devices and electrical power sources for said devices (batteries, generators, etc) on spacecraft or launch vehicles. Use in conjunction with a specific spacecraft or vehic…
99 questions
Deep Space Network is a series of communication antennas around the world used for communication with deep space spacecraft.
99 questions
Questions regarding transfer of data from spacecraft and probes
99 questions
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 …
98 questions
Questions about the use of the Python programming language for projects directly related to Space Exploration as defined in the help center.
96 questions
Questions regarding the computers onboard spacecraft which handle mission-critical data.
96 questions
Questions about life support systems in use on spacecraft, space stations, extraterrestrial colonies, or simulated extraterrestrial environments, about their function, design, effectiveness, historica…
96 questions
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.
96 questions
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