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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 about sets of data used to determine a unique point in a given space, e.g. (degrees North, degrees East) for geographic coordinates
79 questions
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Questions about cosmic rays and cosmic background radiation.
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Questions regarding the amount of money required to perform or sustain space exploration.
165 questions
Questions regarding the amount of money required to send a mass into Earth orbit.
43 questions
Commercially available Off-The-Shelf components are purchased and then made to work in one's application, rather than specifying requirements to a supplier and letting them custom make your component …
8 questions
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27 questions
Question regarding NASA's Crawler-Transporter vehicles used to transport the Mobile Launcher Platforms for Saturn V, Shuttle and SLS launchers.
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Crewed spaceflight (also referred to as human spaceflight or manned spaceflight) is space travel with a crew aboard the spacecraft. When a spacecraft is crewed, it can be operated directly, as opposed…
699 questions
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Questions regarding the number of crew members onboard a mission.
11 questions
Questions regarding pumping of fuel between stages.
3 questions
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Questions regarding use, design, storage, consumption, or other considerations of materials, propellants, systems, or biological samples stored and/or used under very low temperatures, often under lar…
65 questions
The CST-100 (Starliner) capsule is Boeing's Crew Space Transportation designed to transport up to seven astronauts to orbit.
26 questions
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.
247 questions
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Questions regarding the Curiosity rover launched by NASA for the purpose of Mars exploration.
162 questions
Questions about Cryogenic Upper Stage (CUS) designs, testing, their use, advantages and disadvantages compared to other types of upper rocket / launch vehicle stages.
2 questions
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Cyclone Global Navigation Satellite System (CYGNSS) constellation of eight smallsats. Not to be confused with Cygnus, the expendable cargo spacecraft that services the ISS.
4 questions
Questions about the Cygnus cargo space craft designed to service the ISS.
12 questions
The Double Asteroid Redirect Test (DART) is a NASA space mission to testing a method of planetary defense against near-Earth objects (NEOs). Launched from Earth in November 2021, the mission will deli…
24 questions
Questions regarding transfer of data from spacecraft and probes
99 questions
Dawn is a spacecraft that was launched in 2007 to study the Asteroid Belt, specifically Vesta and Ceres.
21 questions
Questions regarding death, cessation of all biological functions sustaining a living being, that are related to space exploration that can happen in space, on a space station, a spacecraft, or any gro…
16 questions
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