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Mercury and Mars both have surface gravity that's about 38 % of the Earth's.

They are the nearest to being half.

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12y ago

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What is the planet in the solar system that is half the size of earth?

Mercury


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The largest planet in the solar system is Jupiter.


What planet is less then one-half the length of Earth's diameter?

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What planet diameter is less one-half the length of earth's diameter?

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What planet's diameter is less than one-half of the length of Earth's diameter?

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Jupiter.


Is Mars the 3th biggest planet?

No, in order of size from largest to smallest the planets are:# Jupiter # Saturn # Uranus # Neptune # Earth # Venus # Mars # MercuryNo. Jupiter, Saturn, Neptune, Uranus, Earth and Venus are all larger than Mars.


What is the second to smallest planet in your solar system?

Earlier, Pluto was the smallest planet and Mercury was next.Now, Mercury is the smallest planet and hence, Mars is the second smallest.Now that Pluto has been reclassified as a dwarf planet, the second smallest is Mars. Before Pluto was reclassified as a dwarf planet, Mercury was the second smallest planet.The second smallest planet in the solar system is Mars with a diameter of 4,221.6 miles.Mars is the 2nd smallest planet, Mercury is the smallest.Mercury


How big is mars big or small?

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