Mars may have a solid inner core like Earth does

Space

Mars may have a solid inner core like Earth does

A new analysis of marsquakes measured by NASA’s InSight lander indicates Mars has a solid inner core – but other researchers say the evidence is thin

By James Dinneen

13 January 2025

The structure of Mars’s core could solve some mysteries about the Red Planet
Shutterstock/AlexLMX

Mars may have a solid inner core within its liquid outer core, according to a new analysis of the planet’s seismic activity. This could help solve several enigmas about Martian geology – but not everyone is convinced.

“It’s big if true,” says at ETH Zurich in Switzerland, who was not involved with the research. “The seismological evidence for it is rather thin.”

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