Earth And Mars Have Similar Amounts of Land

Earth is larger than Mars. At its equator, Mars has a diameter that is roughly half that of the Earth. Additionally, Mars' circumference is almost half that of the Earth. 15% of the volume of the Earth is on Mars. In addition to being smaller, Mars is also less dense than Earth. Despite making up 15% of Earth's volume, Mars only makes up 11% of its mass. As a result, the gravitational attraction on the surface of Mars is only 38% as powerful as that on the surface of Earth. But, it's true, one of the interesting facts about Mars is Earth and Mars both have a similar amount of landmass.

Earth's volume is around 108.321 1010 km3, while Mars has a volume of 16.318 1010 km3, according to NASA. With an equatorial radius of 3,396.2 km and a mass of (very roughly) 0.64169 1024 kg, Mars is roughly half the size of Earth. Earth, on the other hand, has a mass of 5.9722 1024 kg, making it about ten times more massive.

So how could they have the same amount of land if Mars is so much smaller, one may wonder. Simply said, water covers the great majority of the Earth's surface. 71% of the surface of the Earth is covered by a massive ocean system. Although there is water on Mars as well, liquid water cannot last for very long due to the planet's low temperatures and tenuous atmosphere not on the planet's surface, at least.