Are Aliens Tinkering with NASA's Curiosity Rover?

Are human-like creatures present on Mars? A photo captured by NASA in 2012 that went viral on Tuesday shows a human shadow on the red planet.

According to The Huffington Post, photos were taken by Mars Curiosity Rover in 2012, showing shadow bearing appearance of a human-like form. The shadow shows the human-like form tinkering with the rover. While it is possible that the shadow only looks human, UFO trackers are asking if human-like aliens exist on Mars.

"The person has no helmet and their short hair is visible and in high detail. The person has on air tanks on their back and a suit that covers most of the body except the hair," ufosightingsdaily.com wondered.

While the blog post also raised the possibility that the rover was on Earth and not Mars, with humans simply working with it even as it indicated skepticism whether Curiosity is on Mars, it also said, "Is this proof that humans are living on Mars in abandoned alien bases? (i.e. Gary Mckinnon hacker said he found such evidence on US govt computers)."

Those who responded to the post said that the human-like shadow form could simply be the outstretched robotic arm of the rover. A few comments also rubbished claims that Curiosity was not on Mars as they wondered why oxygen air tanks would be required for men if the rover was on Earth.