Deep interior of Mars might have led to the loss of the planet’s atmosphere

Key changes deep in the core of Mars might have led to the planet losing its magnetic field early in its history, a new study suggests.

Today, Mars is a planet with a thin atmosphere that is unable to support substantial running water on the surface, but scientists have found evidence of ancient lakes, streams and perhaps oceans suggesting conditions used to be different. So scientists are eager to understand the presence (or absence) of water on Mars in its early history, particularly to inform assessments of the possibility of life on the Red Planet.