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How much would an object weigh on Mars compared with Earth?
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Mars
An especially serene view of Mars (Tharsis side), a composite of images taken by the Mars Global Surveyor spacecraft in April 1999. The northern polar cap and encircling dark dune field of Vastitas Borealis are visible at the top of the globe. White water-ice clouds surround the most prominent volcanic peaks, including Olympus Mons near the western limb, Alba Patera to its northeast, and the line of Tharsis volcanoes to the southeast. East of the Tharsis rise can be seen the enormous near-equatorial gash that marks the canyon system Valles Marineris.
An object on Mars would weigh significantly less than it does on Earth. Because Mars has only one-tenth of Earth's mass, it exerts a weaker gravitational pull on objects at its surface.1
Specifically, the gravitational acceleration on Mars is approximately 3.72 meters per second squared. Consequently, an object on the Martian surface weighs a little more than one-third of its weight on Earth. While an object's mass remains constant regardless of location, its weight—which is the force of gravitational attraction—varies depending on the gravitational field of the planet or moon where it is located.12