8 intriguing images of Pluto and beyond: What Hubble can tell us
Pluto is not thought to be rocky with some ice covering. From its bulk density it is clear that it is half rock and half ice. I agree with the prior post: who writes this crap?
There are several other errors in this one:
Nothing "rotates" around something else. The moons rotate on their axis and revolve around Pluto. Pluto is only close to the sun part of the time. That has nothing to do with the tilt of the plane of revolution, but is due to the eccentricity of its orbit.
MAJOR error in this picture's caption!
NO planet orbits with the "Sun at the center", instead all solar system objects (planets, dwarf planets, asteroids, comets, etc.) orbit on ellipses with the Sun at one focus of the ellipse (Google 'ellipse' for a diagram).