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Mars, like others in this group, has the same structure: core, mantle and crust, although each layer differs in thickness, depending on the planet. Mercury has an average density of 5.43 g/cm3. Earth is the only denser planet than Mercury. Mercury most likely has a liquid core composed primarily of an iron-nickel alloy. Venus has a crust that dips 10-30 km below the surface. After that, the mantle reaches a depth of about 3000 km. The planetary core is liquid, composed of an iron-nickel alloy. The average density is 5.240 g / cm3. The earth's crust is on average 30 km thick for land and 5 km for the seabed. The mantle extends to a depth of 2900 km.

RELATED MATERIALS The surface of the red planet

The core begins at a depth of about 5100 km and consists of two separate parts: the outer core is a liquid iron-nickel alloy, and the inner core, which is a hard alloy of iron and nickel. The average density of the planet is 5.520 g/cm3. Mars is about half the diameter of Earth. The depth of the crust and mantle is not known for sure, the average density is 3.930 g/cm3.

Size Firstly, even the online satellite map of Mars does not show how small the radius of the red planet is, which is 3.389 km. Its circumference is 21344 km. Further, its volume is 1.63 × 10 11 km3. And the mass, which is equal to 6.4169 × 10 23 kg.

For comparison, it has only 53% of the diameter and about 38% of the Earth's surface area. This is approximately equal to the area of all the continents of the Earth and the 3d map of Mars from the satellite clearly confirms this. Its volume is equal to 15% of the volume of the Earth, and its mass is 11% of the mass of the Earth. As you can see, Mars is a small world, only Mercury is smaller, but despite this, a magnified map of Mars allows you to examine its surface in detail.