- Mars - Wikipedia
Probes have been active on Mars continuously since 1997; at times, more than ten probes have simultaneously operated in orbit or on the surface, more than at any other planet beside Earth Mars is an often proposed target for future human exploration missions, though no such mission is planned yet
- Mars - NASA Science
The fourth planet from the Sun, Mars, is one of Earth's two closest planetary neighbors (Venus is the other) Mars is one of the easiest planets to spot in the night sky — it looks like a bright red point of light
- Mars: Facts - NASA Science
Mars – the fourth planet from the Sun – is a dusty, cold, desert world with a very thin atmosphere This dynamic planet has seasons, polar ice caps, extinct volcanoes, canyons and weather
- Mars | Facts, Surface, Moons, Temperature, Atmosphere | Britannica
Mars is the fourth planet in the solar system in order of distance from the Sun and the seventh in size and mass It is a periodically conspicuous reddish object in the night sky There are intriguing clues that billions of years ago Mars was even more Earth-like than today
- Mars, the red planet: Facts and information | National Geographic
The red planet Mars, named for the Roman god of war, has long been an omen in the night sky And in its own way, the planet’s rusty red surface tells a story of destruction
- All About Mars | NASA Space Place – NASA Science for Kids
Mars is sometimes called the Red Planet It's red because of rusty iron in the ground Like Earth, Mars has seasons, polar ice caps, volcanoes, canyons, and weather It has a very thin atmosphere made mostly of carbon dioxide, nitrogen, and argon People would not be able to breathe the air on Mars Explore Mars!
- Mars Trek - NASA
Trek is a NASA web-based portal for exploration of Mars This portal showcases data collected by NASA at various landing sites and features an easy-to-use browsing tool that provides layering and viewing of high resolution data
- What Does Mars Look Like | All About Mars - Star Walk
Mars is the fourth planet from the Sun and the seventh largest planet in the Solar System With evidence suggesting that it once had flowing water, Mars holds many secrets waiting to be uncovered
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