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Questions about patterns formed by group of prominent stars in the night sky.
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Questions regarding a family of extremely low-mass, electrically neutral particles described in the Standard Model of particle physics.
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Questions regarding the process of accurately finding your location, and getting to another place by planning and following a map.
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Questions regarding the process of assigning an identifying set of characters to an astronomical object.
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Questions about the "adulthood" of stars. The main sequence is a distinctive band of stars that appears in a color-magnitude plot (known as Hertzsprung-Russell diagram). Stars appear in the main seque…
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Questions regarding the former 9th (now dwarf) planet Pluto.
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Questions regarding atmospheric conditions on either Earth or on other planets.
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Space debris (also known as "orbital debris", "space junk", or "space waste") is the collection of defunct objects in orbit around Earth and includes everything from spent rocket stages, old satellite…
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Questions about the apparent displacement of a celestial body with respect to its background when observed along two different lines of sight.
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