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 …

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.

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

Dec 11, 2025 · Clocks on Mars tick faster by about 477 microseconds each Earth day, a new study suggests. This difference is significantly more than that for our moon, posing potential challenges for …

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.

Nov 24, 2025 · 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.

Dec 10, 2025 · Mars - Red Planet, Orbit, Moons: Mars is the fourth planet out from the Sun. It moves around the Sun at a mean distance of 228 million km (140 million miles), or about 1.5 times the …

The planet Mars has been explored remotely by spacecraft. Probes sent from Earth, beginning in the late 20th century, have yielded a large increase in knowledge about the Martian system, focused …

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 …

Nov 24, 2025 · 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 …