Biggest Full Moon of the Year: Take 2
NASA (08 Jan 2009)

This Saturday night, Jan. 10th, a perigee Moon is coming — the biggest full Moon of 2009. Johannes Kepler explained the phenomenon 400 years ago. The Moon’s orbit around Earth is not a circle; it is an ellipse, with one side 50,000 km closer to Earth than the other. Astronomers call the point of closest approach “perigee,” and that is where the Moon will be this weekend.

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