A basic overview of the planet Mercury. Links to information about the other planets and objects in our solar system are included.

A basic overview of the planet Saturn. Links to information about the other planets and objects in our solar system are included.

A basic overview of the planet Uranus. Links to information about the other planets and objects in our solar system are included.

A basic overview of the planet Mars. Links to information about the other planets and objects in our solar system are included.

A basic overview of the planet Jupiter. Links to information about the other planets and objects in our solar system are included.

A basic overview of the planet Venus. Links to information about the other planets and objects in the solar system are included.

Students examine the Tropic of Cancer, Tropic of Capricorn, Arctic Circle, and Antarctic Circle. Related questions are included.

Find tools to calculate astronomical distances and sizes, to view various Solar System models, to compare gravity's affect on weight, and more. A good place to find interesting facts, simple animations, and astronomy links to physics and...

Find tools to calculate astronomical distances and sizes, to view various Solar System models, to compare gravity's affect on weight, and more. A good place to find interesting facts, simple animations, and astronomy links to physics and...

NASA announces the new Carl Sagan Postdoctoral Fellowships in Exoplanet Exploration, created to inspire the next generation of explorers seeking to learn more about planets, and possibly life, around other stars.

A collection of audio lectures from an introduction to astrophysics course taught at the University of California, Berkeley. The course discusses the solar system, stars, quantum mechanics, gravitation, and cosmology focusing on how...

A look at Carl Sagan, the man who brought the wonders of astronomy to the average person. Carl Sagan helped millions of people understand earth, the solar system, the universe and beyond. (In Spanish)

Find out about the ancient Greek astronomer and mathematician who presented the first known model that placed the Sun at the center of the known universe with the Earth revolving around it.

These hands-on activities are are a great way for students to gain perspective on the relative sizes and distances of each planet, the relationship between the sun and Earth, and much more.

These hands-on activities are are a great way for students to gain perspective on the relative sizes and distances of each planet, the relationship between the sun and Earth, and much more.

Through this story you will be introduced to outer space: stars, the Milky Way, planets, the Solar System, the Sun, clouds of dust and gas, galaxies.

Did you know that work carried out by Canadian astronomers is recognized as some of the best in the world? Take the Canadian astronomical adventure and learn about light, the universe, celestial visions, astronomers, observatories and...

Jupiter's immense gravity protects Earth from asteroids. In this video segment adapted from NOVA, scientists searching for signs of life in the universe identify solar systems with Jupiter-like planets that may be shielding smaller...

Ever wonder if we are alone in the Universe? How are scientists searching for alien life? Learn the answers to these questions and find out about other solar systems.

The official site for the "leading organization of the Russian Academy of Sciences in the field of investigations of Outer Space, Solar System planets and other objects of the Universe"

A collection of video lectures created by University of Sheffield to excite young students about topics in physics in elementary school. The course covers topics like forces, gravity, magnets, sound, light, space travel, and the solar...