Chemicals from the Earth's atmosphere are making their way down to the planet. Not in spaceships, but in rain. The acid rain can infiltrate ground water, lakes, and streams. How does acid rain affect aquatic ecosystems?

Learn about the lives of stars, and how stars and planets form. The Interactive activity, 'Planet Families' requires Adobe Flash and cannot be launched.

Our home, Earth, is a living planet. Earthquakes and volcanic eruptions are proof that the geological forces that shaped our planet and created the land masses are ongoing. An amazing example of geologic activity that is less damaging is...

Everything on our planet is linked by a giant recycling system called the biogeochemical cycle. How our planet recycles and reuses everything we need to support life is explained by making a miniature biosphere in this lab. You will also...

Earth's atmosphere, the ocean of air that blankets the planet, is mostly nitrogen and oxygen, with small amounts of other gases. How much oxygen is present in air at sea level? Is air high up in the Appalachians or Rockies? Atop Mount...

How do astronomers collect stardust? They design and build satellites that are launched into space to collect particles on specially designed panels. Satellites can be sent to orbit around an object of interest: a planet, moon, or comet....

Pizza, milk shakes, and ice cream sundaes all contain dairy products, therefore they cannot be eaten by the majority of people around the world. Dairy products contain the sugar molecule lactose, and the majority of people on the planet...

This activity explores the relative size of the eight planets that circle around the Sun.

Find lesson plans, worksheets, photo galleries, and related links for teaching about the weather systems of planets in our solar system.

Find out about how planets have been classified historically, and what scientists use to study them.

Test your knowledge about the solar system with games and activities designed to help explore what you know about the sun, the planets and their moons, space rocks, the Milky Way, and related topics.

From ABC News in Science, Irene Klotz's article discusses the findings of researchers and scientists related to the discovery of an "Earth-like planet" which is capable of supporting life.

From ABC News in Science, Maggie Fox's article explores a new string of "exoplanets" discovered orbiting distant stars. This research leads to numerous possibilities, one of which being the existence of planetary systems containing life...

Kids learn about astronomy, the study of outer space including the stars, planets, comets, black holes, and the Solar System. History and astronomers in this astronomy for teachers and kids section.

What makes up the Solar System? Kid astronomers learn about the planets and the sun.

There are battles that are fought each day on the planet. The invading forces are those of viruses and bacteria. Left alone they would take over and destroy every cell! It is up to some key defense systems to battle and destroy these...

Discusses the serious impact greenhouse gases are having on the pH balance of the oceans. It looks at the sea butterfly, which has more difficulty forming a shell as ocean acidification increases, as well as the damage acidification does...

NASA site features a lesson plan that teachers can use to help their students see how far they are from each of the planets.

Figure out your age and your weight on all the planets in the solar system using the formulas given here. Then type them into the correct place, and let the computer check to see if you are correct.

For this science lesson students will work collaboratively to learn and introduce the eight planets, sizes, characteristics, and their order. They will use size comparisons, research a planet, design a poster and create a PowerPoint...

Did you know you can see many satellites with the naked eye? Try this activity and find out for yourself!

Probably one of the coolest things to imagine is life on another planet! What would it look like? What could it possibly be? Scientists have discovered a planet much like Earth. "I would say that the chances for life on this planet are...

An article about the Planetary Science Institutes's advanced computer software, which it uses to model the way the solar system may have formed. Includes some insights into the results already obtained.

This site is astronomy for kids and teachers! Here students can learn about the planet Earth of the Solar System including fun facts, mass, day, year, and distance from the Sun.