Take off on an Exploratour! Click on one of the many tours listed below to follow a guided tour through a topic. Remember to choose the level that you prefer before entering a tour by clicking one of the three levels that are at the top of this page. On the top of each page in the tour you will see our navigation graphic that will help you quickly
- To move forwards through the tour, click the Forward arrow.
- To move backwards through the tour, click the Back arrow.
- To come back to this page and choose a different tour, click on the blue house button
The Evidence of Evolution Exploratour
Charged Particle Motion in Earth's Magnetosphere
A Peek into the Lives of Stars
Looking at the World in a Different
How to Build a star
Spectacular Crashes in the Universe
Volcanoes in the Solar System
Life on Earth
Life in the Solar System
NASA's Exploration for Life
The Archean Age
The Surface of the Earth
The Surface of Mars
Comparing the Surfaces of Earth
The Atmosphere of Mars
Life on Mars??
Water on Mars
Mars Climate, Now and In the Past
Picturebook: Mars Pathfinder/Global Surveyor
Carbon Cycle of Mars
Magnetosphere of Mars
Last modified November 7, 2005 by Lisa Gardiner.
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This Windows to the Universe Exploratour examines the scientific evidence of biological evolution. It is available at the intermediate and advanced levels only. To travel through the tour, click the back...more
Motions within Earth's metallic core generate the planet's global magnetic field. This magnetic field extends beyond Earth's surface and atmosphere into the space surrounding our home planet. The interaction...more
This tour is not ready yet, but you can click through and look at the pictures if you wish! Please come back in 30 days. This page is the start of the tour of the Evolution of the Solar System. The navigation...more
This is a drawing of the continent of India crashing into the continent of Asia. India is the purple continent to the right of the continent of Africa. Scientists think that many millions of years ago,...more
The Archean is the name of the age which began with the forming Earth, as illustrated in this picture. This period of Earth's history lasted a long time, 2.8 billion years! That is more than half the...more
This page is the start of the tour which explores the surface of Earth. In this tour, we will describe different features found on the surface, plate tectonics and the result of these shifting plates....more
This page is the start of the tour which explores the surface of Mars. In this tour, we will describe different features found on the surface and the geography of the planet. Use the navigation button...more