With evidence suggesting that it once had flowing water, Mars holds many secrets waiting to be uncovered. 5 times the distance of Earth from the Sun. Their landscapes reveal the processes that shaped them: impacts, crustal movements, volcanic activity, and erosion. Nov 24, 2025 · Mars is one of the most explored bodies in our solar system, and it's the only planet where we've sent rovers to explore the alien landscape. NASA missions have found lots of evidence that Mars was much wetter and warmer, with a thicker atmosphere, billions of years ago. 4 days ago · 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. Jan 7, 2026 · For more than 60 years, NASA has pursued answers to one of the biggest questions in science: Was — or is — Mars a habitable world? The key to understanding the past, present, or future potential for life on Mars can be found in NASA’s four broad overarching goals for Mars exploration. 6 days ago · Mars - Red Planet, Orbit, Moons: Mars is the fourth planet out from the Sun. . 2 days ago · Mars is the fourth planet in the solar system in order of distance from the Sun and the seventh in size and mass. NASA’s real-time portal for Mars exploration, featuring the latest news, images, and discoveries from the Red Planet. In 1971 Mariner 9 entered orbit around Mars, being the first spacecraft to orbit any body other than the Moon, Sun or Earth; following in the same year were the first uncontrolled impact (Mars 2) and first successful landing (Mars 3) on Mars. 4 days ago · Mars is the fourth planet from the Sun and the seventh largest planet in the Solar System. S. Gravity, temperature, air, and water all play leading roles May 20, 2025 · A guide to the Red Planet, Mars, including facts about its geology, a history of Mars missions and images captured by astrophotographers. Mars once had liquid water on its surface and could have supported life. May 20, 2025 · A guide to the Red Planet, Mars, including facts about its geology, a history of Mars missions and images captured by astrophotographers. It is a periodically conspicuous reddish object in the night sky. Their geological history is preserved on their surfaces. A Rocky Planet The planets closest to the Sun—Mars, Earth, Venus, and Mercury—are made mostly of rock. Scientists are uncovering how Mars transformed into the cold, dry desert world it is today. In 1971 Mariner 9 entered orbit around Mars, being the first spacecraft to orbit any body other than the Moon, Sun or Earth; following in the same year were the first uncontrolled impact (Mars 2) and first successful landing (Mars 3) on Mars. It moves around the Sun at a mean distance of 228 million km (140 million miles), or about 1. Probes have been active on Mars continuously since 1997. Jan 16, 2026 · NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U. There are intriguing clues that billions of years ago Mars was even more Earth-like than today. The rocky planets all formed in our inner solar system. Congress, ending efforts to collect Perseverance rover samples that could contain evidence of Jan 16, 2026 · MAVEN has enough fuel to stay in orbit until 2030, but after a month of silence, scientists say recovery is increasingly unlikely.

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