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Lox · 09-13-2002, 01:18 PM

IIRC, there are three aspects of the earths rotation/orbit that change over time. The orbit around the sun is slightly elliptical. If you were above the plane of the orbit looking down, assume the long ends of the ellipse point at 9:00 and 3:00 (on a clock face). Over time (I forget the period, but I think maybe 50,000 yrs) the long ends of the ellipse will rotate through 6:00 (and 12:00) and so on. Thats one. The second part is the tilt of the axis. The earth is slowly going through preceission (sp?). Right now the North Pole points toward the sun during July, but in X yrs the North Pole will point away from the sun in July. (It's kind of like a spinning top as it slows down). Now what was the third part... damn, I can't remember.

I'm sure these affect our climate, but I don't think anyone knows how exactly.

09-13-2002, 01:18 PM	#25
Lox Manshoon Join Date: July 15, 2002 Location: Los Angeles Age: 50 Posts: 213	IIRC, there are three aspects of the earths rotation/orbit that change over time. The orbit around the sun is slightly elliptical. If you were above the plane of the orbit looking down, assume the long ends of the ellipse point at 9:00 and 3:00 (on a clock face). Over time (I forget the period, but I think maybe 50,000 yrs) the long ends of the ellipse will rotate through 6:00 (and 12:00) and so on. Thats one. The second part is the tilt of the axis. The earth is slowly going through preceission (sp?). Right now the North Pole points toward the sun during July, but in X yrs the North Pole will point away from the sun in July. (It's kind of like a spinning top as it slows down). Now what was the third part... damn, I can't remember. I'm sure these affect our climate, but I don't think anyone knows how exactly. __________________ [img]\"http://img.photobucket.com/albums/v381/AngAvs/avatar6517_2.jpg\" alt=\" - \" /><br />A Thinking Monkey told me.