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Which planet is red planet?

Mars Mars is known as the Red Planet because iron minerals in the Martian soil oxidize, or rust, causing the soil and atmosphere to look red.

solarsystem.nasa.gov - Overview | Mars – NASA Solar System Exploration

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Mars is the fourth planet from the Sun – a dusty, cold, desert world with a very thin atmosphere. Mars is also a dynamic planet with seasons, polar ice caps, canyons, extinct volcanoes, and evidence that it was even more active in the past. Mars is one of the most explored bodies in our solar system, and it's the only planet where we've sent rovers to roam the alien landscape. NASA currently has two rovers (Curiosity and Perseverance), one lander (InSight), and one helicopter (Ingenuity) exploring the surface of Mars. Perseverance rover – the largest, most advanced rover NASA has sent to another world – touched down on Mars on Feb. 18, 2021, after a 203-day journey traversing 293 million miles (472 million kilometers). The Ingenuity helicopter rode to Mars attached to the belly of Perseverance. Perseverance is one of three spacecraft that arrived at Mars in 2021. The Hope orbiter from the United Arab Emirates arrived on Feb. 9, 2021. China’s Tianwen-1 mission arrived on Feb. 10, 2021, and includes an orbiter, a lander, and a rover. Europe and India also have spacecraft studying Mars from orbit. In May 2021, China became the second nation to ever land successfully on Mars when its Zhurong Mars rover touched down. An international fleet of eight orbiters is studying the Red Planet from above including three NASA orbiters: 2001 Mars Odyssey, Mars Reconnaissance Orbiter, and MAVEN. These robotic explorers have found lots of evidence that Mars was much wetter and warmer, with a thicker atmosphere, billions of years ago.

Go farther. Explore Mars In Depth ›

Ten Things to Know About Mars

10 Need-to-Know Things About Mars 1 Small Planet If the Sun were as tall as a typical front door, Earth would be the size of a dime, and Mars would be about as big as an aspirin tablet. 2 Fourth Rock Mars orbits our Sun, a star. Mars is the fourth planet from the Sun at an average distance of about 228 million km (142 million miles) or 1.52 AU. 3 Longer Days One day on Mars takes a little over 24 hours. Mars makes a complete orbit around the Sun (a year in Martian time) in 687 Earth days. 4 Rugged Terrain Mars is a rocky planet. Its solid surface has been altered by volcanoes, impacts, winds, crustal movement and chemical reactions. 5 Bring a Spacesuit Mars has a thin atmosphere made up mostly of carbon dioxide (CO2), argon (Ar), nitrogen (N2), and a small amount of oxygen and water vapor. 6 Two Moons Mars has two moons named Phobos and Deimos. 7 Ringless There are no rings around Mars. 8 Many Missions Several missions have visited this planet, from flybys and orbiters to rovers on the surface.The first true Mars mission success was the Mariner 4 flyby in 1965. 9 Tough Place for Life At this time, Mars' surface cannot support life as we know it. Current missions are determining Mars' past and future potential for life. 10 Rusty Planet Mars is known as the Red Planet because iron minerals in the Martian soil oxidize, or rust, causing the soil and atmosphere to look red.

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No other planet has captured our collective imagination quite like Mars.

This view of rover tracks on Mars is part of the free destination poster set. Credit: NASA / Moore Boeck | › Full size poster and download options In the late 1800s when people first observed the canal-like features on Mars' surface, many speculated that an intelligent alien species resided there. This led to numerous stories about Martians, some of whom invade Earth, like in the 1938 radio drama, "The War of the Worlds." According to an enduring urban legend, many listeners believed the story to be real news coverage of an invasion, causing widespread panic. Countless stories since have taken place on Mars or explored the possibilities of its Martian inhabitants. Movies like "Total Recall" (1990 and 2012) take us to a terraformed Mars and a struggling colony running out of air. A Martian colony and Earth have a prickly relationship in "The Expanse" television series and novels. And in the 2014 novel and its 2015 movie adaptation, "The Martian," botanist Mark Watney is stranded alone on the planet and struggles to survive until a rescue mission can retrieve him.

solarsystem.nasa.gov - Overview | Mars – NASA Solar System Exploration