Puzzling Structures on Surface' of YU55

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Speculation surrounding the origin, makeup and trajectory of Asteroid YU55 continues and NASA isn't making it any better. In a statement released yesterday, scientists from Jet Propulsion Laboratories said:

"The animation reveals a number of puzzling structures on the surface that we don't yet understand. To date, we've seen less than one half of the surface, so we expect more surprises." (Click here for the complete article from NASA)