Jezero Crater on Mars is a 45-kilometer-wide crater that once hosted a lake billions of years ago, fed by two distinct river valleys, eventually forming an exit channel over time. The crater features a massive river delta formed by sediments deposited as the inflow slowed, and researchers hypothesize that the delta and lake were created under freshwater conditions, indicating the potential for life as we know it, also called biosignatures.

Jezero Crater on Mars is a 45-kilometer-wide (28-mile) crater that once hosted a lake billions of years ago fed by two distinct river valleys with Jezero eventually forming an exit channel over time. One of Jezero’s most prominent features is the massive river delta that consists of sediments that were deposited as the inflow slowed down. Researchers hypothesize that the delta and lake were formed under freshwater conditions, indicating the potential for life as we know it, also called biosignatures.
