Mars may have a solid inner core just like Earth New research based on an iron and sulphur mixture mirroring the Red Planet’s inner core suggests that Mars’ deep interior could be solid, like Earth. Astrobitica March 6, 2025 (Last updated: March 6, 2025) 1 minute read New research based on an iron and sulphur mixture mirroring the Red Planet’s inner core suggests that Mars’ deep interior could be solid, like Earth. About the Author Astrobitica Administrator Visit Website View All Posts Post navigation Previous: NASA switches off Voyager instruments to extend life of the two interstellar spacecraft ‘Every day could be our last.’Next: DNA-busting radiation from star-killing supernova could have influenced evolution on Earth