14Crop CirclesMatt Weber: July 19, 2014 | 76,698 views
The significantly sized geometric shapes have been appearing since the late 1970s. Originally the circles have popped up in rural Great Britain. Many people blame the large patterns on teenage vandals, but some still can't be explained. Some have popped up in the midwest of the USA.
13Mars Curiosity Rover
The Curiosity Rover, an unmanned mission to Mars by NASA (National Aeronautics and Space Administration), was sent to Mars in 2013. During this mission, contact with mission control was lost for an extended period of time. During those several minutes, there was a glitch with the memory as well. No one has a real explanation for the incident.