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Mars has two relatively small (compared to Earth's) natural moons, Phobos (about 22 kilometres (14 mi) in diameter) and Deimos (about 12 kilometres (7.5 mi) in diameter), which orbit close to the planet. The origin of both moons is unclear, although a popular theory states that they were asteroids captured into Martian orbit.
It was believed that the cutoff for round objects is somewhere between 100 km and 200 km in radius if they have a large amount of ice in their makeup; [1] however, later studies revealed that icy satellites as large as Iapetus (1,470 kilometers in diameter) are not in hydrostatic equilibrium at this time, [2] and a 2019 assessment suggests that ...
The relative sizes of and distance between Mars, Phobos, and Deimos, to scale (Load the image in full size to see both Moons of Mars.) March 5, 2024: NASA released images of transits of the moon Deimos , the moon Phobos and the planet Mercury as viewed by the Perseverance rover on the planet Mars.
Mars' size difference also affects the force on its surface. If you weighed 100 lbs on Earth, you would weigh only 38 lbs on Mars . Olympus Mons is a 68,897 ft high volcano that formed billions of ...
Olympus Mons stands 24 km tall and is nearly 600 km in diameter. ... These terrestrial anomalies are of similar geometry and size as those detected on Mars, with ...
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The low gravity is due to Mars' small size and also its lower density. Mars' mass is only 11% of Earth's mass. Mars' mass is only 11% of Earth's mass. Mars' diameter is 4,213 miles (6,780 kilometres) and the diameter of Earth is 7,926 miles (12,756 kilometres).
Size comparison between Phobos, Deimos and the Moon (right) Deimos is a gray-colored body. Like most bodies of its size, Deimos is highly non-spherical with triaxial dimensions of 16.1 km × 11.8 km × 10.2 km (10.0 mi × 7.3 mi × 6.3 mi), corresponding to a mean diameter of 12.5 km (7.8 mi) which makes it about 57% the size of Phobos. [7]