We can't understand nature without understanding its range.
Mercury may have suffered the same fate that G 367 b may have suffered. It might have had more mantle and crust at one time, but impacts removed it."Thanks to our precise mass and radius estimates, we explored the potential internal composition and structure of GJ 367 b and found that it is expected to have an iron core with a mass fraction of 0.91," the new paper states.
"Thanks to our intensive observations with the HARPS spectrograph we discovered the presence of two additional low-mass planets with orbital periods of 11.5 and 34 days, which reduce the number of possible scenarios that might have led to the formation of such a dense planet," said co-author Davide Gandolfi, Professor at the University of Turin.
"Possible pathways may include the formation out of material significantly more iron-rich than thought to be normally present in protoplanetary disks. Although it is not clear if disks with such a large relative iron content specifically near the inner edge exist," they write.said that their work on planet formation"fails to reproduce the extreme enrichments in Fe needed to account for the formation of Mercury.
Artist's image of a collision between a protoplanetary object and a Mercury-sized planet. Collisional stripping could've removed G 367 b's outer layers, leaving only an iron core behind.
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