/u/Etvaht115's posts
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If time moves slower on Earth than it does in empty space in the solar system due to gravity, does NASA account for this when planning out missions?
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(forgive stupid question) Why do some scopes have the larger end toward the back of the rifle while most seem to have it toward the front?
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Do safes with digital keypads have a manual way to get inside if the batteries die and there's no power?
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