ATMOSPHERE

Atmosphere is 5 layers that protects the Earth from space Rocks. First one is the Troposphere that is 0-12 km from the ground and on which high planes are flying. Second one is the Stratosphere that is 12-50 km from the ground. Third one is the Mesosphere that is 50-80 km from the ground and on that high can be a meteoroids. Fourth one is the Thermosphere that 80-700 km from the ground on that high can be spacecraft, satellites and Aurora Borealis. And the fifth one is the Exosphere that is 700-190,000 km from the ground.