Authors: C M Pieters; E Ammannito; D T Blewett; B W Denevi; M C De Sanctis; M J Gaffey; L Le Corre; J-Y Li; S Marchi; T B McCord; L A McFadden; D W Mittlefehldt; A Nathues; E Palmer; V Reddy; C A Raymond; C T Russell Journal: Nature Date: 2012-11-01 Impact factor: 49.962