Astronomy: the solar system

Which of the following is true about the planets in the solar system?

All the planets rotate in a progradedirection, except one.  Which planet has a retograde?

Which planet was formed from the light gases of the outer solar nebula?

1 solar day on Jupiter lasts only 9 hours and 50 minutes. What causes a solar day?

Whichof the following inner solar system bodies has the largest volcanoes?

In many ways, Earth is like other planets in the solar system.  Which way is Earth different?

Lex Luthor wears a shard of kryptonite around his neck, what is he wearing?

Mercury has extreme temperatures, ranging from 465 to - 180.  Why is their such a large range?

Which of the following planets is always closer to the sun than it is to Earth?

Surface of Mercury and our Moon contain very large craters that are likely the result of

Which statement best describes the big bang theory?

Jupiter is a large planet that has very faint rings around it.  How many rings does it have?

An object composed mainly of ice is orbiting the Sun in an elliptical path. what is this?

Which planet has rings circling it?

Which material is Not found in the asteroids between Mars and Jupiter

Venus has thick clouds that absorb less sunlight than Earth but has a high temps. Why is this?

What do the four planets closest to the sun have in common?

this is a "space rock" that is still in space

Which planet has the greatest role in changing the direction of a comet's path?

 one planets axis of rotation lies almost in the planeof its orbit, which planet is this?

Pluto was discovered because Uranus moved around funny.  Which explains why this might occur?

A Moon rock is dated to 4.44 Billion years ago while an Earth rock is 4 Billion. Why is this?

A nebula is thought to create our system, most condensed to make the sun.  What caused condense

What was the most likely source of the water that formed the hugeoutflow channels of Mars? 

When we look at the sky at night, why do we seldom see other planets in our solar system?

Which one, if any, of the planets other than Earth has an atmosphere that would support life?

the atmospheres of which 2 planets are composed mainly of hydrogen and helium gases?

Gravity is responsible for the 

The diameter of Saturn is almost 10 x's that of the Earth, but density is much less.  Why?

What planet is known as "the Red planet" because of its soil color?

The largest body in our solar system is