We already know that the spiders from Mars are real -- but has the NASA rover Curiosity picked up real evidence of extraterrestrial life on the Red Planet?Conspiracy theorists think so. Some of these photos -- taken by the Curiosity over the past year and on other missions to Mars -- look a lot like rocks. Some of them look a lot more peculiar, like the "iguana" found earlier this month. All of them are the stuff of Internet legend, and many believe that NASA is hiding something.(Huffington Post)ANN.Az