We now know that the orbit of a stable planet around a star like the Sun is always in the shape of:
A) a circle
B) a parabola
C) a straight line
D) an ellipse
E) none of the above

Question

Quizplus · Accepted Answer

Kepler's laws of planetary motion tell us that the orbit of a planet around a star is always an ellipse, with the star located at one of the two foci of the ellipse. This is one of the most important discoveries in astronomy, and has allowed scientists to accurately predict the positions of planets in our solar system and in others.

We Now Know That the Orbit of a Stable Planet