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Phobos is 22.2 km in diameter on average (27×21.6×18.8)

Deimos is 12.6 km in diameter on average (10×12×16)

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16y ago

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What has many moons inner planets or outer planets?

the inner plants have a total of three moons. our moon, and two moons of mars. Phobos, and Deimos. but the out planets have many more moons. Neptune has the least amount of moons out of all the outer planets. it has 13 moons. but, the other outer planets have way more. Jupiter even has 63. of course, there are probably many more moons still to be discovered. well, not for earth and mars. in total, the outer planets must have at least 100 moons.


Why is the acceleration on earth different on mars?

The gravitational force between two masses depends on the product of their masses and the distance between their centers. The gravitational acceleration on a planet depends on the planet's mass and the distance of its surface from its center. So if two planets have different masses or different sizes, then you'd naturally expect their gravitational accelerations to be different. No two planets or moons in the solar system have the same mass or the same size, so no two of them have the same gravitational acceleration. Compared to Earth, it's 62% less on Mars, 83% less on the Moon, 10% less on Venus, and 164% more on Jupiter.


Which other planet in the solar system is most like earth?

The planet that most resembles Earth in many factors is Mars. However, no planet most resembles the Earth in all factors.


Does the earth have two satellites or Mars?

Mars has two natural satellites. Earth has one.


How are the planets of the solar system grouped?

U can group the planets by size,weight and amount of moons