NASA's retired InSight lander has provided crucial data revealing a sluggish Martian mantle, suggesting that Mars has geological activity much slower than Earth's.

Additionally, researchers discovered evidence of a solid inner core, indicating the planet's internal structure is more complex than previously thought. These findings enhance our understanding of Mars' geological history and evolutio

https://www.nytimes.com/2025/09/04/science/astronomy-geology-mars-quakes.html