Gypsum on Earth and Mars

EarthzineEarth Observation, Would You Believe?

– Mexico’s Cuatro Ciénegas Basin has plenty of gypsum and a network of pools full of bacteria that descended from one of the earliest forms of life. The combination makes it one of the best places on Earth to investigate what life might have looked like on Mars.

The Dunes of Titan

EarthzineWould You Believe?

– While most of Saturn’s moons display their ancient faces pockmarked by thousands of craters, Titan – Saturn’s largest moon – may look much younger than it really is because its craters are getting erased.