Learn interesting facts about the planet Uranus and its unique history.

Basic facts about the planet Venus including its temperature, its atmosphere, and its volcanoes. Includes a discussion question on temperature, with facts, and the answer. A linked page covers similar material in a "Level 2" version, and...

Discover interesting facts about Venus, the hottest planet and the second planet from the Sun.

Provides good information about Mercury and is a good starting point for information about the planet along with pictures and audio. Links to a simple fact table, puzzle, glossary, and more detailed information.

Learn fascinating facts about Neptune, the last of the planets in our solar system.

Practice your subtraction facts while saving the planet in this online game.

Discover interesting facts about Jupiter, the biggest planet in our solar system.

Find out about our closest star, the sun. Read interesting facts and other trivia about our planet's source of energy.