50,600
			Closest distance (in miles) a spacecraft has come to Uranus.
			1781
			Year Uranus was discovered.
			84
			Earth years it takes Uranus to make one trip around the sun. A Uranian year.
			1,740,000,000
			Average distance (in miles) from Uranus to the sun. About 2.4 billion km.
			11
			Number of Uranian rings.
			-350¡F
			Average temperature on Uranus.

Uranus is the seventh planet from our Sun. It is the third largest planet in our solar system.

Uranus is named for a Roman god who was father of the Titans.

WHAT'S IT LIKE ON URANUS?
Uranus is very cold, windy and, like most of the other planets, poisonous to humans. It is a gas planet like Jupiter, Saturn and Neptune. There is nothing to land on. The air – atmosphere – gets thicker and thicker until it is squished into liquid. That is called pressure.

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You feel pressure in your ears when you dive to the bottom of a swimming pool. The same thing happens on Uranus, but it's much stronger. A person or spacecraft diving through Uranus' clouds would be crushed.

Seasons on Uranus last more than 20 years because the planet is tilted on its side. Scientists think it may have been whacked by a planet-sized object a long time ago.

Uranus is extremely cold at the cloud tops. But deeper down there is a layer of 'superheated' water, ammonia and methane. Scientists think methane shoots to the surface in huge bubbles and becomes bright clouds. The methane also absords red light and reflects the blue-green colors we see when we look at Uranus through a telescope.

Down near the core of Uranus, it heats up to 9,000¡F (4,982¡C).

Uranus is so far away it is difficult to study. Scientists use math to predict what the planet is like. Uranus' 11 rings weren't discovered until 1977. And several of Uranus' 20 moons were discovered as recently as 1999. There may be more undiscovered moons out there.

URANUS CHALLENGE
Imagine if you landed on one of Uranus' icy moons. Draw a picture of what would you see in the sky.

MISSIONS TO URANUS
Featured Mission: Voyager 2
Voyager 2 studied Uranus for several months in 1985 and 1986. But most key observations were made during the 6 hours the spacecraft was closest to the planet.

Source: NASA