At Exeter University, teams of mathematicians and astrophysicists use observatories and powerful computers to model the atmospheres of other planets - including the atmosphere of Earth as it was, billions of years ago. These observations and models aren't only important to understand the rest of the universe: they also help us understand how Earth's climate works today... and how it might change in the future.
Below, you can compare different planets, and 'scan' their surfaces to show different parts of their atmospheres and climates.