text: The biggest proof we have that it wasn't made my aliens is our digital image. This was 3 times bigger than the pixel size. It would be able to see if there were objects in this picture like monuments or aliens. It could even see small shacks if there were any. Our spacecraft got to look at it a second time in 2001 and could see more better than the 1976 one. There was still nothing to be found but a natural landform.