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View Diary: Back When the Earth Had Two Moons (67 comments)

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  •  At 600 miles across it likely had the mass (0+ / 0-)

    and momentum to pass L4.

    FDR 9-23-33, "If we cannot do this one way, we will do it another way. But do it we will.

    by Roger Fox on Thu Aug 04, 2011 at 03:25:45 PM PDT

    [ Parent ]

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