The Earth's atmosphere also traps heat from the Sun, in what is known as the greenhouse effect, and without this phenomenon, the Earth would be a much colder place, making it much more hostile to ...

Titan's atmosphere is thick —by far, the thickest of any moon in the solar system, and even 50% thicker than the Earth's atmosphere. It's mostly nitrogen (just like the air of Earth) but also ...

The Earth has a layered structure made up of crust, mantle, outer core and inner core. Find out more in this BBC Bitesize guide for students aged 11-14.

Earth’s atmosphere remains stable enough for life to flourish, but it is not static. For example, the stratosphere occasionally touches the ground, but this only happens at one point on Earth ...

First came the surprising discovery that Earth’s atmosphere is leaking. But for roughly 60 years, the reason remained a mystery. Since the late 1960s, satellites over the poles detected an ...

Earth as oxygenator. Earth loses about 90 tons of gas—mainly hydrogen and helium—to space every day. That’s tiny compared to the mass of our atmosphere, so there’s no cause for alarm. But ...

Traces of Earth’s earliest atmosphere could be buried on the Moon Future lunar sample return missions could bring back rocks that contain molecules from a mysterious time in our planet’s history.