Average of equatorial and polar diameters = 6770 kilometres.
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No, Mars has a smaller diameter than Earth. Earth's diameter is about 12,742 kilometers, while Mars's diameter is about 6,779 kilometers.
Some data was reported in Imperial units instead of the usual metric units. Because of this, the orbiter went down to an altitude of 57 km above Mars instead of 140-150 km. It was destroyed by the atmosphere as it was not designed for atmospheric flight.
The diameter of Mars is 6 779 km.The day on Mars is very similar to the terrestrial day.
Saturn is about 9.45 times larger in diameter than Mars. Saturn's diameter is approximately 116,464 km, while Mars' diameter is about 12,742 km.
Mars is about 6780 kilometers (4240 miles) in diameter, a little more than half the diameter of Earth.