What happened to the jettisoned Apollo lunar modules?
Back to Article List From the December 2024 issue All but one of the Apollo program’s used lunar modules either ...
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Does dark matter affect our solar system?
Back to Article List From the December 2024 issue Dark matter does pervade the solar system like an invisible fog. ...
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How long would it take for an observer using binoculars to notice the Moon’s terminator moving?
Back to Article List From the January 2016 issue At the Moon’s average distance, it would take about four hours ...
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How big is Earth's orbit around the Sun?
Back to Article List From the November 2024 issue Earthâ€s orbit around the Sun is not circular, but an ellipse. ...
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