Mars - Wikipedia
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 …
Mars - NASA Science
Nov 24, 2025 · Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited entirely by robots.
Mars | Facts, Surface, Moons, Temperature, & Atmosphere | Britannica
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 Facts | What Does Mars Look Like | All About Mars - Star Walk
Jan 19, 2026 · 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 …
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.
Mars Facts | All About Mars – NASA Mars Exploration
NASA’s real-time portal for Mars exploration, featuring the latest news, images, and discoveries from the Red Planet.
39 Mars facts, discoveries and images - BBC Sky at Night Magazine
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 May Have Been Half Covered by an Ocean Three Billion Years Ago
1 day ago · The Red Planet may have once been half blue. A sea the size of Earth’s Arctic Ocean blanketed part of Mars about three billion years ago, researchers suggest in a study published …
Mars | National Air and Space Museum
Known as the Red Planet, Mars has always intrigued us, but only in recent decades have we come to know our smaller neighbor as a world of great complexity. The planets closest to the Sun—Mars, …
Mars: Facts - NASA Science
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.