Thursday, June 16, 2011

The wobbling motion of moon

A cool animation of moon's phase sliced in time:

From wired
Although we only see one side of the moon, as the video shows, this side appears different throughout the year because of the moon’s orbit and the tilt of its axis. Sped up in the video, these appear to cause the moon to wobble, known as libration. It’s also pretty cool to see the monthly phases of the moon’s cycle in such detail and at such speed.

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