# Why is there this asymmetry between the two foci of an orbital ellipse?

Why does the Earth revolve with the Sun at one of its foci? Does the other focus do nothing? Why is there this asymmetry in our solar system?

• "Does the other focus do nothing" what do you expect it to do? Commented Aug 30, 2012 at 16:35
• Well, I don't know, but the same thing happens if you take a planar cut, at an angle, through a cone. The curve you get is an ellipse, and the center of the cone is one focus of the ellipse. Commented Aug 30, 2012 at 16:50
• @ Yrogirg : Anything, but just not be the way it is. Commented Sep 1, 2012 at 13:30
• Related: physics.stackexchange.com/q/4731 Commented May 13, 2013 at 20:22
• @EmilioPisanty: Thanks. You're right - except that the center of the cone is not the center of the ellipse, except for a circle. Easiest way to see that is to cut the cone on a plane almost, but not quite, parallel to the edge, so as to create an ellipse of very high eccentricity. Commented Apr 10, 2014 at 12:45