"Planets move in ellipses with the Sun at one focus.

The orbit of every planet is an ellipse with the sun at one of the two foci.
The orbit of every planet is an ellipse with the sun at one of the two foci.
The orbit of every planet is an ellipse with the sun at one of the two foci.
The orbit of every planet is an ellipse with the sun at one of the two foci.