Murcury’s inner core

  • Mercury Has Solid Inner Core, Planetary Scientists Say
    Mercury Has Solid Inner Core, Planetary Scientists Say0

    Planetary researchers have long known that Earth and Mercury have metallic cores. Mercury’s core fills nearly 85% of the volume of the planet — huge compared to the other rocky planets in the Solar System. Like Earth, Mercury’s outer core is composed of liquid metal, but there have only been hints that Mercury’s innermost core is solid. Now, 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 indeed solid and that it is very nearly the same size as Earth’s solid inner core.