Thigh bone on Mars taken more than two years after the Curiosity rover's trip to the red planet has recently struck many conspiracy theorists into a flurry. According to The Independent, they believe that they've struck gold after a thigh bone on Mars was spotted by the rover.

For many hunters of life on space, including various UFO blogs and national news sites, science blogs and social media accounts, the photo of the thigh bone on Mars is clear evidence that life on the planet is possible, and that this life as represented by the bone, is something large.

The photo of the thigh bone on Mars, which is real, has been taken by the Curiosity rover MastCam on Aug. 14. Since the photo's release, conspiracy theorists online have had a fit over the past week, reports The Sydney Morning Herald.

Theories of possible life on the red planet include large animals, even dinosaurs.

An anonymous editorial writer at Northern Voices Online said, "Simply put this shows that there were some living things on the Mars (sic)."

A popular site called UFO Blogger also compared the recent photo of the thigh bone on Mars to "fossilized, reptilian spine" and also a "human finger".

But, NASA scientists have concluded that these theories are highly unlikely.

The Huffington Post reiterates that the NASA Mars rover Curiosity did not just photograph a thigh bone on Mars, and that the $2.5 billion car-sized robot did see the remains of a fossilized Martian animal while on a routine sweep of the planet's surface last week.

In order to put a stop to the ongoing rumors of the thigh bone on Mars being absolute proof of life on the planet, NASA was prompted to give its opinion on Friday, a week after the photo was taken and shown to the public.

NASA's scientists announced, "Seen by Mars rover Curiosity using its MastCam, this Mars rock may look like a femur thigh bone. [But] mission science team members think its shape is likely sculpted by erosion, either wind or water."

"If life ever existed on Mars, scientists expect that it would be small simple life forms called microbes. Mars likely never had enough oxygen in its atmosphere and elsewhere to support more complex organisms. Thus, large fossils are not likely."

Though not proof in the least bit to wildlife on Mars, the theories prove the human brain's extraordinary ability to liken patterns in random noise, said The Independent.

The thigh bone on Mars is only something that looks like something else, but isn't really what it was thought to be, especially as it reportedly landed on the planet on Aug. 6 2012.

Astronomical Society of Victoria's Perry Vlahos, an astronomer and a columnist for Fairfax Media, publisher, said that the human brain often plays tricks on its owner, in this case having many think that the seemingly thigh bone from Mars is from actual wildlife on the planet.

Vlahos said, "One of the fantastic things about the human brain is that we're wired for pattern recognition. And so [it means] we look for familiar things in whatever it is that we're glancing at."

He added, "It's been a huge part of evolution in being able to understand patterns and visualise things that help us avoid predators ... and it's something that's grown up with humans over a long period of time."

"So I'm not surprised that people see a 'man in the moon' and a 'thigh bone' on Mars."

He also said that he would become "extremely surprised" if the object in the photo taken from the rover was anything other than what scientists expected to see on the red planet.

Vlahos said, "If there was something genuine to this image as being something that could be anything other than just a natural occurrence and just light and shadow playing with our minds and our eyes I would be very surprised."

According to the Huffington Post, other findings which it did not make include a dinosaur, a lizard and an alien helmet, which all turned out to be rocks or metallic rocks.

Still, The Independent said that there is some truth to conspiracy theorists' hopes of life on Mars. Last year, scientists said that the asteroid which killed the dinosaurs 66 million years ago could have chucked rocks with organic matter to the planet.

However, in this day and age, roughly 3 billion years ago, Mars was a barren planet with no flowing water. Vlahos said there had been previous findings showing that there was water on Mars, which now could be in ice form, but it would not be enough to support life there.

So far, there is still no evidence showing there had been life on Mars.

Vlahos said, "If there was evidence of [life] on Mars it would have been front-page news way before any of this conspiratorial stuff came up."

"There have been a number of press conferences that have been held by scientists where they reported such discoveries."

He added, "[For example] there was a meteorite that was found in Antarctica some 10 years ago and we thought that we had found evidence of bacteria in it coming from Mars and later on it was decided that that wasn't the case."

"So no, there's been [no evidence] and if there ever was it would be at the bacterial level. It won't be anything like a large animal that would give us such bones."

Thigh bone on Mars recently captured by the Curiosity rover unfortunately isn't anything to prove that there had been an actual living and breathing organism on the red planet. It was, unfortunately, just our eyes playing tricks on us. The Curiosity rover's counterpart, the Opportunity rover, spotted a mysterious rock shaped like a jelly doughnut earlier this year, but later turned out to be a piece of a larger rock broken and moved by the Mars rover Opportunity's wheel in early January.