Comet 67P, up close and personal... A recent photo returned by Rosetta, from its Valentine's Day low pass. As I was perusing it this morning, it occurred to me (for about the 10,000th time) just how monochromatic most things in the solar system are. The few bodies that have significant color variation (Io, Jupiter, Earth) really stand out. Even red Mars is mostly, well,
red...
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