An Ancient Lake in Gale Crater, Mars
This illustration represents the possible extent of an ancient lake inside Gale Crater on Mars. Examination of mudstone confirmed the exist of the lake which formed billions of years ago.

Sign up for Big Think on Substack
The most surprising and impactful new stories delivered to your inbox every week, for free.
This illustration represents the possible extent of an ancient lake inside Gale Crater on Mars. Examination of mudstone confirmed the exist of the lake which formed billions of years ago. In fact, as climate conditions changed on the planet, multiple lakes of different sizes appeared and disappeared in the area.
Read more here.
Image credit: NASA/JPL-Caltech/MSSS
Sign up for Big Think on Substack
The most surprising and impactful new stories delivered to your inbox every week, for free.