All coverage
Nasa probe determines Mars' internal structure
By Jonathan Amos
Scientists Just 'Looked' Inside Mars. Here's What They Found
By Katrina Miller & Matt Simon
Inside Mars, NASA's InSight Mission Mapped Surprises Down to the Core
By Robin George Andrews
Red planet has a big core, complex crust
By John Timmer
Scientists mapped the mysterious interior of Mars for the first time ever
By Brandon Specktor
Marsquakes reveal the mysterious interior of the red planet
By Ashley Strickland
Marsquakes reveal Red Planet has surprisingly large core, thin crust
By Nola Taylor Tillman