17. Is that a human thigh bone? Nope, just rocks.
In August 2014, NASA’s Curiosity rover captured an image of what looked to be a large femur bone from a thigh. Lying among dirt and rocks, the thigh bone stood out for its size and resemblance to a human leg. Of course, this discovery leads space fanatics to get excited about the possibility of alien life on Mars.
Scientists, of course, debunked the idea of alien life almost immediately. They insisted that the thigh bone was a rock that was shaped by water and wind erosion. Also, the thigh bone was crooked, and human bones are straight. Experts believed that if life were to be found on Mars, it would be in the form of simple life forms called microbes. The atmosphere on Mars is too thin to sustain complex organisms.