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2015-11-12. The Dwarf Planet That Came in from the Cold—Maybe.

posted Nov 19, 2015, 12:20 PM by Alan Gould
By Ron Cowen, EoS, Earth & Space Science News, AGU. For GSS A Changing Cosmos chapter 7. Excerpt: ...The presence of ammonia-rich clay on much of the surface of Ceres suggests that this dwarf planet—the largest object in the asteroid belt—may have formed far out in the solar system, then wandered in....  https://eos.org/articles/the-dwarf-planet-that-came-in-from-the-cold-maybe