Resource explores the solar system, with an in depth discussion of each of the planets and their properties.

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.

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...

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

Find out about interstellar space, and what characterizes this part of space outside of the heliosphere.