NASA made a big public announcement as advance promotion for the press conference where they final broke the suspense of what it was they had to say, and finally told us all at that press that extraterrestrial life was now much more likely a possibility.  Those false claims are still up on NASASS' website.  Whether the majority or what ever percentage of images from NASA may or may not be veracious, is irrelevant, as NASA has made them all incredible by lying in more than a few instances.