Astronomers Come Closer to Understanding How Mercury Formed - by PaulMattSutter
Astronomers believe that the inner edge of the protoplanetary disc was probably relatively lacking in material. Also in that young system the giant planets did not appear in their present day orbits. Instead they migrated from where they initially formed to their current positions. As those giant planets moved they destabilized the inner disk, potentially removing even more material.of Mercury.
While the models were able to capture the core size of Mercury, the simulations still couldn’t get the overall mass of the planet right. The simulations generally produced a Mercury that was two to four times more massive than it really is. It remains an open question as to how Mercury came to be. The astronomers suspect we need to pay more careful consideration to the chemical properties of the protoplanetary disk, especially focusing on how dust grains can stick together and survive the intense radiation environment at Mercury’s orbit.
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