Mars: Ancient Protoplanets Hidden Deep Within
New research suggests that the remains of ancient protoplanets may be hidden deep within Mars' mantle. NASA's InSight lander data reveals structures formed by impacts 4.5 billion years ago.
Mars Clay Deposits: Ancient Lakes and Climate Clues
Study reveals Martian clay deposits near ancient lakes, formed 3.7 billion years ago. Lack of tectonic activity impacts CO2 levels and past warmer, wetter climate on Mars. Clay traps chemicals.