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Mars is approximately half the diameter of Earth, with a surface area only slightly less than the total area of Earth's dry land. Mars is less dense than Earth, having about 15% of Earth's volume and 11% of Earth's mass, resulting in about 38% of Earth's surface gravity.
Learn about Mars, the fourth planet from the Sun, and its history, climate, moons, and missions. See images, videos, and news from NASA's robotic explorers and human spaceflight plans.
4 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 intriguing clues that billions of years ago Mars was even more Earth-like than today.
Learn about Mars, the fourth planet from the Sun, and its features, history, and potential for life. Find out how Mars compares to Earth in size, distance, orbit, seasons, moons, and more.
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Jul 11, 2022 · Mars, the fourth planet from the sun is famed for its rusty red appearance. Here we explore the Red Planet in more detail.
Learn about the red planet's history, climate, geology, and potential for life in this comprehensive article. Discover how Mars compares to Earth and why it is a fascinating world to explore.