oseen · source-linked reporting

Scientists report that Mars has a solid inner core of iron and nickel about 613 kilometers in radius,

Composition of Mars — Scientists report that Mars has a solid inner core of iron and nickel about 613 kilometers in radius, surrounded by a liquid outer core, based on seismic data from NASA's InSight l

Published September 3, 2025· Updated October 28, 2026·1 min read

Context: Composition of Mars.

Scientists report that Mars has a solid inner core of iron and nickel about 613 kilometers in radius, surrounded by a liquid outer core, based on seismic data from NASA's InSight lander. [https://apnews.com/article/mars-core-nasa-insight-ac38ae787b41d3d2727a693f3c2b7d28 (AP)]

Event summary via Wikipedia Current Events (2025-09-03).