Learn some of the characteristics of Mars. These characteristics lead some people to believe that life forms may be found on the fourth planet from the Sun.

This article answers some of the most common questions about Mars: Why is it red? Is there water on Mars? What else have scientists discovered from spacecraft that have landed there? Also, visitors can follow links to learn more about...

This section of the exhibition gives the history of the discovery and study of space starting with the Greeks and Romans through to the early 1900's.

Individual or classroom activity helps students understand the solar system because they can visualize it. Extension resources are included.

A collection of high-resolution images of space. Images "showcase the discoveries and excitement of planetary exploration, with a focus on the origin and evolution of the Solar System and the search for life".

NASA-sponsored coverage and research on a range of topics related to space exploration -- flying weather stations, comets, first steps on the Moon, and other space-related topics -- are presented in age-appropriate activities, lesson...

Planet Earth is part of a vast space neighborhood called the solar system. Our solar system is an amazing place. It's even more amazing that many other solar systems have been discovered. This article examines the solar system.

All the planets are competing to see who is the best planet in the Solar System. Read the story in Spanish to learn the results of the pageant. Excellent source of information presented in a fun manner.

Do you have what it takes to go on a space mission to the Red Planet? Think you can handle it? Take this quiz to find out!

Article describes how the Curiosity rover on Mars will soon attempt to drive over a sand dune, which may be risky for the vehicle.

This site contains information about Brahe's contributions to astronomy, and also discusses his planetary model.

[Free Registration/Login Required] This informational text passage shares facts about planets in the solar system. This passage is a stand-alone curricular piece that reinforces essential reading skills and strategies and establishes...

This site gives you opportunities to practice putting the planets in the correct order from the sun. Press "Click here to begin" to get started.