Uranus has retrograde rotation. The reddish color of Mars is caused by large amounts of silicon oxide. The life detection experiments proved there is no life on Mars. Mars has two known satellites. Surface features on Mars are smaller than those on the Earth, i.e. mountains are smaller, canyons not as long or deep, etc.
All evidence points to running water in Mars' past history.
The source of Jupiter's excess energy is thought to be a. lightning bolts in the atmosphere b. internal heat left over from its formation c. produced by tides between the planet and the Sun d. energy absorbed from beyond the solar system and then re-emitted. Saturn e. the center of the Milky Way galaxy. Iapetus e. Titan. Nereid c . Charon e. Titan.