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A super "perigee moon" -- the biggest in almost 20 years---glows lunar large above Walla Walla Saturday night. The event is rarer than the famed blue moon, which happens once about every two-and-a-half years. Due to its elliptical orbit, the moon is closest to the earth at perigee and furthest away at apogee. At perigee it is about 31,000 miles closer than at apogee. The last time this event occurred was in 1993. If you missed it Saturday, the next show will be in 2029. March 19, 2011

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MAJOR MOON

A super "perigee moon" -- the biggest in almost 20 years---glows lunar large above Walla Walla Saturday night. The event is rarer than the famed blue moon, which happens once about every two-and-a-half years. Due to its elliptical orbit, the moon is closest to the earth at perigee and furthest away at apogee. At perigee it is about 31,000 miles closer than at apogee. The last time this event occurred was in 1993. If you missed it Saturday, the next show will be in 2029.

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