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 …

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 …

Nov 23, 2025 · 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. …

A Rocky Planet The planets closest to the Sun—Mars, Earth, Venus, and Mercury—are made mostly of rock. The rocky planets all formed in our inner solar system. Their geological history …

5 days ago · Mars’s Coloe Fossae reveals a landscape shaped by ancient ice ages, with deep valleys, cratered terrain, and frozen debris flows preserved from a time when the planet’s …

5 days ago · Scientists have detected what they believe to be lightning on Mars by eavesdropping on the whirling wind recorded by NASA's Perseverance rover.

A view of the surface of Mars shows an unusual feature — a seemingly square crater bounded on three sides. Please see the explanation for more detailed information.

火星 （英語： Mars； 天文符號：♂），古名 熒惑，是離 太陽 第四近的 行星，也是 太阳系 中仅次于 水星 的第二小的行星，为 太陽系 里四顆 類地行星 之一。

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 …

3 days ago · Researchers have documented 55 instances of "mini lightning" over two Martian years by eavesdropping on the whirling wind recorded by NASA's Perseverance rover.