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An SI Board Since December 1999
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Emcee:  cornbread Type:  Unmoderated
This year will be the first full moon to occur on the winter solstice. Dec. 22, commonly called the first day of winter, in over a hundred years. Since a full moon on the winter solstice occurs in conjunction with a lunar perigee (point in the moon's orbit that is closest to Earth), the moon will appear about 14% larger than it does at apogee (the point in it's elliptical orbit that is farthest from the Earth). Since the Earth is also several million miles closer to the sun at this time of year than in the summer, sunlight striking the moon is about 7% stronger making it brighter. Also, this will be the closest perigee of the Moon of the year since the moon's orbit is constantly deforming. If the weather is clear and there is a snow cover where you live, it is believed that even car headlights will be superfluous.
On December 21st, 1866, the Dakota Sioux took advantage of this combination of occurrences and staged a devastating retaliatory ambush on soldiers in the Wyoming Territory. In layman's terms it will be a super bright full moon, much more than usual AND it hasn't happened this way for 133 years! Our ancestors 133 years ago saw this. Our descendants 100 or so years from now will see this again. I hope someone else might find this interesting! Remember this will happen December 22, 1999.
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14 Moon is VERY bright tonight.Annette-12/20/1999
13 Bill -- Long time. Stumbled across one of your posts over on PC's new threjwk-12/20/1999
12 much bettah fur parka out boots mittens champagne ready for that full moonRainy_Day_Woman-12/20/1999
11 Stuff on the Solstice.. ====================== "SUPER SYZYGPatrick Slevin-12/20/1999
10 I hope you get to feeling better. Never a good time to get sick, especially acornbread-12/19/1999
9 a hot tub! mmmmm, could go for that right now sitting here, quarantined for tRainy_Day_Woman-12/18/1999
8 Quite interesting! I will have to remember to be outside on the night of the 2Binder-12/18/1999
7 I just love sitting in the hot tub and looking up at the stars. Makes all the cornbread-12/18/1999
6 a perfect excuse to go a little crazy!!! I love the night sky sigh.... thankRainy_Day_Woman-12/18/1999
5 When Rome became a Christian state it decreed that all areas under its vast conAnnette-12/17/1999
4 Thanks Corn. That Was Kewl. :o)10K a day-12/17/1999
3 Outstanding information! I am an astronomy freek and this was new on me! I wilJacques Chitte-12/17/1999
2 Hi - here is a great site average joeaverage joe-12/16/1999
1 Nice post, We will have out the scopes at a dark site miles from town. The coBill on the Hill-12/16/1999
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