We have all heard of little green men from Mars.
But now an American 'armchair astronaut' claims to have discovered a mysterious structure on the surface of the red planet - by looking on Google earth.
David Martines, whose YouTube video of the 'station' has racked up over 200,000 hits so far, claims to have randomly uncovered the picture while scanning the surface of the planet one day.
He used the search giant's maps of the astral body and his video has already clocked up a staggering 58,000 views.
David explains how he found the 'space station' or possibly 'power station' quite by accident at coordinates 71 49'19.73"N 29 33'06.53"W.
Unlike mountains and other features on the surface, the white 'building' appears to have blue and red stripes painted on it.
According to David's calculations it is also huge - measuring 700ft long by 150ft wide.