This is an image of Mars.
Click on image for full size
Image from: NASA
The Earliest History of Mars
In the earliest history of Mars, there was probably lots of water. Heat from inside Mars probably caused volcanoes, as well as continental drift. These conditions are very favorable for certain forms of life.
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On Mars, the water is trapped, frozen, within the ground. Nevertheless, there is evidence for running water on Mars. When the water is melted and released to the surface, it will run from higher ground...more
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Separate from the Martian outflow channels, or the river valleys, are large Martian lakes (600 km, or ~1000 miles across) which once were part of a flood. ...more
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The orbit of Mars is very oval shaped. The orbit is much more oval shaped than the Earth's orbit. This means that the climate of Mars can change drastically between warm and cold. ...more
This is an image of a storm moving across the Martian land. The camera is looking down on the storm, the same way storms are presented on the news. The storm provides evidence that there is water on Mars....more
This is image of a Martian sunset illustrates just how thin the Martian atmosphere is. In this image, the Martian sky appears pink and a little bit dark at sunset. Unlike the Martian sky, the Earth's sky...more