Feats: Andrew McCarthy Shoots 2 Million Photos to Show the Moon's 'Wobble'
Above: Andrew McCarthy's visualization of the moon's travels.
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The moon waxes and wanes. But it also seems to wobble.
Don’t worry, it’s not really wobbling. This apparent oscillation, called libration, occurs because the moon’s axis is tilted slightly, relative to the plane of its orbit around the Earth. Result: …