Mars
Mars, Earth's outer neighbor, is the fourth planet from the Sun. Mars' bright appearance and reddish color stand out in the night sky. Impressive surface features such as enormous volcanoes and valleys are frequently obscured by huge dust storms.
Visit another planet: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Dwarf Planets
What's New on the Site?
When Nature Strikes - Earthquakes
When Nature Strikes - Volcanoes
When Nature Strikes: Tsunami Classroom Activity
When Nature Strikes: Wildfires - Why are they a challenge to stop?
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Explore Mars
Interior and Surface of Mars
The uniquely red global surface of Mars is marked by many interesting features - some like ...Read more
Atmosphere of Mars
The atmosphere of Mars is much thinner than that of Earth, with a surface pressure averaging ...Read more
Moons of Mars
Mars has two small moons, Phobos and Deimos. The red planet does not have any rings. ...Read more
The Poles of Mars
The North and South Poles on Mars are similar to the polar regions on Earth in many ways. They ...Read more
Planetary Facts
All of the relevant information about Mars collected on one page, including details about size, orbit ...Read more
Myth and Culture
Mars was the son of Jupiter and Juno, and was the Roman god of war. Mars was the lover of Venus ...Read more
Missions to Mars
In the past few decades, the Russian and American space agencies have sent many spacecraft ...Read more
Images and Multimedia
Access wonderful captioned photos and illustrations that will inspire and excite you. ...Read more
Mars Links
These are links to other great web sites about Mars. But beware: you don't want to get caught ...Read moreMore about Mars
- Latest News from Mars
- Discovery of Mars
- Animation showing the orbit of Mars
- Tours
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Did you know?
Did you know that our Solar System has a new dwarf planet? Astronomers have officially categorized Haumea as a dwarf planet.Did you know that Pluto is not always outside the orbit of Neptune?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?Shadow zone
xShadow zone : The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopped entirely by the liquid core and P waves being b
Click on the word to find out!
Research Highlights
Unprecedented Warming in East Africa's Lake Tanganyika
Lake Tanganyika, the second-oldest and second-deepest lake in the world, could be in for some rough waters. Geologists have determined that the East African rift lake has experienced unprecedented warming...Read more
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Real Climate: climate science from climate scientists
Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information.
