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Why are the Sun and Moon so named?
Started by thedoc |
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Should we blow up an Earth-bound object?
Started by thedoc |
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Can 9V DC be stepped up to 220V DC?
Started by thedoc |
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How do sunspots cycle?
Started by thedoc |
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How does Ganymede's magnetic field arise?
Started by thedoc |
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How do masses distort space?
Started by thedoc |
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How do hydrogen atoms fuse?
Started by thedoc |
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How long is a piece of string?
Started by Don_1 |
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Have they found the Higgs boson?
Started by graham.d |
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How large can an optical telescope be?
Started by Geezer |
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