Which is the largest planet? Jupiter
Which is the smallest planet? Pluto
Which is the most nearly the size of the earth? Venus
Is Mars smaller than or larger than earth? Mars is smaller than earth
Which planets have ring systems? Saturn, Jupiter, Uranus and neptune
Which planet has the most known number of moons? Jupiter, jupiter has four moons
Around which planet is Mimas? Saturn, Mimas is one of its moons.
To which planet did the huygens-Cassini probe go? Saturn, to study the planet and its four moons
Include a picture of the surface of mars 
picture from wikipedia
Include a picture of the surface of Venus
picture from wikipedia.
On which planet is the great Red Spot? Mars
In 1994 on july 16-22 fragments of the comet Shoemaker-leby hit the surface of which planet? how big was the largest impact compared to the size of the Earth? The Shoemaker Levy collided into jupiter, the largest imapct was 6000km of a dark dot.
