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Uranus' SeasonsNeptune's AtmosphereUranus' MoonsInside NeptuneJUPITER'S COMPOSITIONToday's featured page: Knock-Knock Jokes and Riddles for Kids



Our subscribers' grade-level estimate for this page: 6th - 7th
Table of Contents Enchanted Learning
All About Astronomy
Site Index
Our Solar System Stars Glossary Printables, Worksheets, and Activities
The Sun The Planets The Moon Asteroids Kuiper Belt Comets Meteors Astronomers

Your weight on the Planets The Planets Your age on the Planets
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune pluto
URANUS
Introduction to Uranus Seasons and Rotational Tilt Atmosphere and Planetary Composition Uranus' Rings Uranus' Moons Activities, Web Links

INSIDE URANUS

PLANETARY COMPOSITION AND ATMOSPHERE
Uranus is a frozen, gaseous planet.

Atmosphere: The planet is shrouded in an icy cloud layer (made up of frozen methane, ethane, and acetylene) circling this planet at 185 mph (300 kph. Uranus' icy atmosphere consist of 83% hydrogen,15% helium, and 2% methane. The outer layers of the atmosphere are the coldest; temperature and pressure rise under the cloud layer.

Partially-solid Layers: Beneath the atmosphere, there is a liquid layer of hydrogen and helium. As depth increases, this layer becomes more viscous, and then partly solid. This layer may be composed of compressed water with ammonia and methane.

Core: Uranus has a molten rocky core about 10,500 miles (17,000 km) in diameter and about 12,500°F (6927°C). This core may have a mass five times greater than the mass of the Earth.




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