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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.

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How physics applies to a particular activity in space or to getting to space.
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Questions regarding travel on a cosmic scale, from one star to another.
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Questions about vehicles sent to extraterrestrial bodies, generally for use in data collection.
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Questions about impact of radiation on space exploration.
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Questions about asteroids, bodies in the solar system smaller then planets which orbit the sun.
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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.
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Questions about debris in space, often in Earth orbit. Usually referring to nonoperational man-made satellites or parts of satellites.
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Questions regarding spacecraft designed to travel between planets.
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Questions regarding the Soyuz manned spacecraft used by the Soviet and Russian space program.
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Questions which ask for an object in a photograph or other media to be identified and/or have its function described.
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Questions on obtaining electrical energy from the light of the Sun through either direct photovoltaic conversion or thermal conversion.
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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…
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Questions regarding the spacesuits that astronauts wear whilst in space
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the process of designing a spacecraft to fulfill a particular objective.
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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…
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Questions about satellites designed to aid in communications, such as phone, TV and Internet satellites.
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Questions regarding the absence of significant gravitational force.
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Questions on launch complexes, spaceports or other locales for the launch of spacecraft.
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Questions explicitly involving numerical analysis.
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Questions regarding special words and abbreviations used in space exploration, and their meaning in that context.
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a set of parameters that uniquely identify a specific orbit.
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Questions pertaining to materials used for construction of space-worthy objects.
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Questions regarding the second planet from the Sun.
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Using radio wavelengths to communicate between multiple spacecraft or between a spacecraft and the Earth.
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Questions regarding rocket propellant in liquid form, the main type used for chemical rockets.
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Questions on the subject of missions to the Lunar surface - past, present, and future
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Topics that relate to orbit determination and flight path control. May also be used for navigation on the surface of celestial objects.
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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…
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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, …
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Questions regarding visual impressions of objects or instruments used to capture visual impressions.
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Questions regarding space exploration safety issues and procedures.
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Questions regarding living organisms, searches for life, or human life in space.
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Questions about orbits whose position in the sky remains the same for a stationary observer on the primary body.
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Questions regarding the use of an object's gravity to change the velocity of a spaceship.
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Questions regarding the amount of money required to perform or sustain space exploration.
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Questions about research and use of water in space environment