is the Sun a sphere (like the Earth) or is it more oval-shaped and elliptical? because, since the Earth is (nearly) spherical, the moon has a (nearly) circular motion. BUT, many (if not all) of the planets in the solar system have ELLIPTICAL orbits. This leads me to believe that the Sun is NOT SPHERICAL (!) but instead more shaped like an ELLIPSE. (I always thought of the sun as pretty much spherical). Is this correct?