APOD: 2010 December 1 - Martian Moon Phobos from Mars ExpressAstronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2010 December 1 Martian Moon Phobos from Mars Express Credit: G. Neukum (FU Berlin) et al., Mars Express, DLR, ESA; Acknowledgement: Peter Masek Explanation: Why is Phobos so dark? Phobos, the larges
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