You will never guess what this is

The Mystery Image Contest is a challenge for students and teachers promoted by the American Association for the Advancement of Science that offers the chance to identify a science-related object based on a close-up picture of it.  The selected images depict anything from seeds to planets from a very special perspective that will make the objects unrecognisable or, if you want, mysterious. Once you and your students have made your guess, you will find a description for the answer and a list of resources to prepare a lesson starting from these stunning images. Eager to test your investigative skills? Check it out at http://sciencenetlinks.com/mystery-image/