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Science, Evolution, and Creationism, by the National Academies, focuses on teaching evolution in today's classrooms. Check out the other publications in our online store.
This is a schematic showing how atmospheres form.
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Image from: The New Solar System

How a planet-to-be sweeps up nearby material to be part of itself

As shown in this picture, while they were forming in the solar nebula, the core of the planets-to-be drew material to themselves from the cloud of gas and dust around them. The bigger planets-to-be were able to draw even more material unto themselves because of gravity.

Because of its position in the solar nebula, Saturn was able to draw a huge amount of gas unto itself.


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Our online store includes fun classroom activities for you and your students. Issues of NESTA's quarterly journal, The Earth Scientist are also full of classroom activities on different topics in Earth and space science!

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Cool It! Game

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

The position of Saturn when gas changed to ice

The position of the planets in the solar nebula affected how big they became and what they were made of. The blue line in the picture shows where it became so cold that ice began to form. Planets that...more

An Overview of Motions in Saturn's Atmosphere

The most important motions in the atmosphere are winds. The major winds in Saturn's atmosphere are the zonal winds which are made of zones and belts. Zones and belts blow in opposite directions around...more

Saturn's Belts and Zones

The clouds on Saturn, like Jupiter, are divided into stripes called "belts and zones". In a belt, very powerful winds blow one way. In a zone, very powerful winds blow the other way. These kinds of winds...more

How a planet-to-be sweeps up nearby material to be part of itself

As shown in this picture, while they were forming in the solar nebula, the core of the planets-to-be drew material to themselves from the cloud of gas and dust around them. The bigger planets-to-be were...more

Saturn's Strange Hexagon

Astronomers have discovered a strange shape in Saturn's atmosphere. The shape is a hexagon. The hexagon is near Saturn's North Pole. Scientists aren't quite sure why Saturn has the hexagon shape in its...more

Saturn's Southern Polar Vortex

If you wanted to go someplace warm for a vacation, would you choose the South Pole? If you lived on Saturn you might! Saturn's South Pole is the warmest place on the ringed planet. Watch out for the weather,...more

Discover Saturn

Saturn is the second largest planet in our solar system. It is also very bright in the sky. The ancient Greeks named the planet after the god of farming and time. The rings of Saturn were first seen by...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF