text: Mission controllers checked twice to make sure it wasn't created by aliens. In the article the author states, the first time we took pictures of the Face we had to go through clouds, skeptics thought that alien markings were hidden by haze. The author also states, "As a rule of thumb, you can discern things in a digital image 3 times bigger than the pixel size, so, if there were objects in this picture like airplanes on the ground or Egyptian-style pyramids or even small shacks, you could see what they were!" These two details prove that mission controllers checked twice to make sure that the Face on Mars was not created by aliens.