Part of the National Air and Space Museum's online exhibition about Exploring Planets, this describes and gives visuals of telescopes, probes and fly-by aircrafts, orbiters, and landers as current methods for earth and airborne...

This is a useful resource for facts and images pertaining to the planet Mercury.

This article describes the mother polar bear's pregnancy, birth, and motherhood. She is number four of the top10 animal moms.

The plate tectonics and other features of the Earth's lithosphere are explained and illustrated. Has links to definitions of the magnetosphere, atmosphere, and hydrosphere.

Learn about the early life and aviation career of Wiley Post, who set a world record for flying around the planet.

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...

Site provides information on the Earth's atmosphere as well as offers additional information about Earth.

Find out how the atmosphere, climate, and the greenhouse effect are related. While the atmoshere can protect us, it can also be harmful to our health.