An artist’s impression of how Mars could have looked billions of years ago, with an ocean covering part of its surface. NASA/GSFC When you were at school, you likely learned about the Earth’s water ...

Students will be able to develop and explain a particle-level model to describe evaporation and condensation in the context of the water cycle. The water cycle depends on the processes of evaporation ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. There's a hole in the Martian atmosphere that opens once every two years, venting the planet's ...