Uranus: Planet 7

	Diameter	31,763 miles (51,118 km)
	Average Distance from Sun	1,784,800,000 miles (2,872,500,000 km)
	Planet Composition	methane ice and rock
	Atmosphere	helium, hydrogen, methane
	Average Temperature	-320°F (-195°C)
	Number of Moons	5 large and 16 or more small
	Orbital Period	30,589 days (83.8 years)
	Period of Rotation	17 hours 14 minutes retrograde

Uranus rotates strangely. It rolls around the sun on its side, instead of the more "upright" rotation of the other planets. It also rotates the opposite direction of most of the rest of the solar system, so its rotation is called retrograde. Perhaps this strange orientation was caused by a collision with a planet-sized object long ago. This would have blown Uranus apart, and when the material reassembled, it spun in a different direction.

We cannot see storms on Uranus because a thick fog at the top of the atmosphere hides the planet. It does have strong winds, which have been recorded at between 90 and 360 miles per hour.

The surface of Miranda, one of Uranus's moons, has a twisted, jumbled-up collection of fault canyons, grooves, and ridges on the surface. Astronomers theorize that collision with other moons or asteroids broke Miranda apart as many as five separate times. Each time, the gravity of the remaining pieces reassembled the moon in a different way, creating the unusual patterns.

Miranda's surface