text: The camera they used in 2001 compared to 1977 had a way better camera. Also they stated in the article "...on April 8, 2001--a cloudless summer day in Cydonia--Mars Global Surveyor drew close enough for a second look". This takes out the reasoning of the conspiracy theorists that their were clouds and shadows blocking the camera that made it appear as a butte in 2001 compared to when it looked like a face in 1977.