This could be a piece of space debris, but it is also just possible that it’s some sort of space plane or even an unidentified flying object. We’ve been looking around for similar images of space debris, and haven’t found any. So we’re posting it here. It’s an entirely authentic image, straight from the NASA website. To see the original click on the source link.

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Story Source:
http://eol.jsc.nasa.gov/sseop/images/ISD/highres/STS108/STS108-703-93_3.JPG