Mercury's Darkness Due To Hidden Layer Of Ancient Graphite
Mercury ’s aerofoil is pockmarked with crater , showing astronomers that it has beenbombardedby shooting star and asteroids for four billion years . Although these craters are in themselves perfectly striking , they have of late reveal the answer to a longstanding question about the geology of this distant rocky human race : Why is Mercury ’s surface so dark ? As a new study inNature Geoscienceconcludes , this dark is due to a obscure ulterior bed of black lead ....