The planet Mars is a cold and dry world completely devoid of life, but billions of years ago things were much different. This is when Mars had a much warmer interior than it does today, resulting in active volcanism that replenished its atmosphere, a magnetic field that protected the planet from harmful solar and cosmic radiation, and a surface of flowing liquid water. But due to Mars’s small size, the interior cooled far faster than Earth’s has cooled, leading to a loss of volcanism, near-absolute depletion of its magnetic field, and complete evaporation of all surface liquid water. But what is the interior heat of Mars like today?
Laurence Tognetti is a Writer & Content Creator at various esteemed platforms. He focuses on a diverse range of topics including aerospace engineering, astronomy, and climate change, often exploring the intersections of natural sciences and technology. Laurence's work has been featured in notable publications such as Phys.org, Space.com, and Astronomy magazine.













