Scientists May Have Finally Detected a Solid Inner Core on Mars

Scientists May Have Finally Detected a Solid Inner Core on Mars

Almost a decade after NASA’s InSight mission put the first working seismometer on the Martian surface, researchers are still combing through its records of faint ground vibrations to reveal secrets of the planet’s deep interior. In a recent analysis, scientists reported seismic evidence that Mars has a solid inner core, an unexpected finding that challenges earlier studies that suggested the planet’s core was entirely molten. Like Earth—and onio…