I believe the short version is "eccentric orbit"
Can someone explain how the #supermoon is not going to happen for another 18 years even though the moon's orbital period is 27 days?
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Sure -- That doesn't explain the 17 year deal though. We'll have another good one in Jan 2018, Feb 2019
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That happens every 13.5 months.
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this looks like a very complete explanation https://www.fourmilab.ch/earthview/moon_ap_per.html …
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#flatearth jk. No idea, but that's an interesting question.Thanks. Twitter will use this to make your timeline better. UndoUndo
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