A team of scientists from NASA’s Goddard Space Flight Center, MIT, Sapienza University, Case Western Reserve University and Columbia University has found evidence that Mercury’s inner core is solid.
Planetary core - Wikipedia
The elusive planet: Humanity's study of Mercury - Max Polyakov
A close-up view of Mercury, MIT News
Seismic waves reveal what lies at the centre of Mars
2 Tour of the Solar System: A Transformative Decade of Exploration
Planetary core - Wikipedia
Sulphur in the inner core of the planet Mercury: impact on elastic
BepiColombo prepares for its first Mercury flyby on Friday
Mercury has a massive solid inner core
Liquid Center: Mercury has a molten core, radar reveals
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