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Astro Bob blog: Rosetta's comet from 17.8 miles - forbidding yet inviting

2.5 miles of rugged, icy, airless desert. Is there a more forbidding looking place in the solar system? I can't get enough of it. See some fascinating close-ups plus a color image.

1122572+67P Sept 19 CROP boulder.jpg

2.5 miles of rugged, icy, airless desert. Is there a more forbidding looking place in the solar system? I can't get enough of it. See some fascinating close-ups plus a color image.

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