Ever since Percival Lowell mistakenly concluded that there were canals on Mars, we've always wondered if there was life on that planet. Now, seven curious photos taken by the Mars rover Curiosity may make us wonder even more.

According to an article by   on huffingtonpost.com:

"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."

For a look at the seven photos, visit huffingtonpost.com.