(Nasa)

DEPENDING ON YOUR age, it may just seem like some squiggly lines, but to us, one of the Mars Exploration Rovers has drawn a penis with its tracks on the surface of the red planet.

It’s not known which rover drew the image or when it happened but the sketch of the manhood was found amongst a number of images taken by one of the rovers that have been displayed on the NASA website.

NASA’s twin robots, Opportunity and Spirit, were launched almost 10 years ago to examiner the possibility of life on Mars.

While Opportunity continues its exploration 37 times longer than the three months planned for its prime mission, Spirit stopped working in 2010. Curiosity was launched from Cape Canaveral in 2011.

Curiosity Rover’s self portrait at ‘John Klein’ drilling site. (Image: NASA)

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