Dramatic Dark Smudge Appears Where Hayabusa2 Landed on Ryugu Asteroid

It’s not clear if the impact itself caused the discoloration, or if the activities of the probe upturned darkened material from below.

from gizmodo http://www.gizmodo.co.uk/2019/02/dramatic-dark-smudge-appears-where-hayabusa2-landed-on-ryugu-asteroid/