By the early 1900s, scientists had identified major layers of the atmosphere based on how the temperature changed at different levels above the sea. Thanks to these studies, we now know the five ...

When you look at photographs of Earth from space, the planet looks like a blue marble, with patterns of clouds lying on the surface of the marble. It seems as if Earth's atmosphere is incredibly ...

The Earth’s atmosphere has six layers. In the second layer, the stratosphere, you can find the ozone layer, which is made up of a gas called (wait for it) ozone. Ozone molecules are formed of ...