Quakes on Mars Reveal Sluggish Mantle and Solid Inner Core
Quakes on Mars Reveal Sluggish Mantle and Solid Inner Core Lead: Using seismic records from NASA’s retired InSight lander, teams reporting in Nature and Science in early September 2025 found that Mars hosts a solid inner core about 375 miles in radius and a mantle scattered with ancient, meter-to-mile-scale debris down to roughly 870 miles … Read more