Subject / Started by | ||
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Airplane Trajectory
Started by lkppp94 |
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Airplanes on a Flat Earth.
Started by JohnH. |
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Airline flight data - summary.
Started by 3DGeek |
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A Horizon Sighting Survey
Started by Bobby Shafto |
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Age of the Earth
Started by PickYerPoison |
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A few questions about the Sun from a novice
Started by Sir Parsifal « 1 2 » |
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A Few Questions
Started by OneHumanPuzzled |
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A few questions
Started by TomLannon |