Mercury.
There are two planets with an almost perfectly spherical shape. They are Mercury and Venus.
No planet's orbit is perfectly circular. They are all elipses.
Of the planets in our solar system, Venus has the smallest eccentricity.
An orbit that is not perfectly round is called an elliptical orbit. In an elliptical orbit, the distance between the orbiting body and the central body varies, resulting in a shape that resembles an elongated circle. This type of orbit is characterized by its eccentricity, which measures how much it deviates from a perfect circle. Most celestial bodies, including planets and satellites, follow elliptical orbits due to gravitational influences.
it is perfectly round.
yes
Yes
Mercury.
yes
pooey in the looey
Is a circle.
A sphere.
A circle or a sphere
yes
Nobody's head is perfectly round. It is a free-form shape. Everybody's is a different shape.
A perfectly round stainless steel ball, a number of which in a round casing are a 'bearing'.