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 …

2 days ago · Learn about its formation, structure, atmosphere, size and distance, moons, and much more.

5 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. It is a periodically conspicuous reddish object in the night sky. There are …

Mars once had liquid water on its surface and could have supported life. Scientists are uncovering how Mars transformed into the cold, dry desert world it is today.

NASA’s real-time portal for Mars exploration, featuring the latest news, images, and discoveries from the Red Planet.

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.

Jan 19, 2026 · 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.

1 day ago · The web-like features are believed to be sculpted by ancient groundwater, offering new clues about the Red Planet's watery past.

Feb 17, 2026 · Scientists may be one step closer in their hunt for signs of past life on Mars after the Curiosity rover's latest find.

Jul 26, 2024 · In a dry river valley on Mars, NASA’s Perseverance rover may at last have found its reason for being: evidence of ancient alien life—and with it, a lifeline for the space agency’s grand but...