Almost where the moon

The earth's atmosphere extends over a distance of up to 10,000 km. The atmosphere consists of several layers: troposphere, stratosphere, mesosphere, thermosphere and exosphere. At a distance of up to 50 km from the surface, it is denser, and as you move away from it, the density and pressure decrease. In fact, 75% of the earth's atmosphere is contained in the first 11 km from the planet's surface. The exosphere - the highest layer - is the "gateway" to outer space, where there is no atmosphere at all. The exosphere is primarily composed of very low density hydrogen, helium, and a number of heavy molecules such as nitrogen, oxygen, and carbon dioxide.

70% of the Earth's surface is not land. This is water. When people first looked at the Earth from space, it was then that it got its second name - the Blue Planet. The remaining 30% is occupied by the so-called continental crust with an average thickness of 35–45 km, reaching up to 75 km under mountain ranges. The rise in the level of the World Ocean, which occurs as a result of global warming and the melting of glaciers, is one of the main reasons for the concern of mankind. Perhaps soon the percentage of land and water will have to be revised

Earth is made up of iron, oxygen and silicon. If the planet is divided by its composition, this series will look like this: 32.1% iron, 30.1% oxygen, 15.1% silicon and 13.9% magnesium. At the same time, most of the iron is actually located in the earth's core - 88%. As for the earth's crust, it has the most oxygen - 47%.