Antarctica's unique space rocks
BBC: A pair of meteorites discovered in Antarctica are in a class all of their own, says Ryan Zeigler, from Washington University in St Louis, US at the 39th Lunar and Planetary Science Conference. The paired meteorites, known as GRA 06128 and GRA 06129, were discovered in the Graves-Nunataks region of Antarctica in 2006.
The rusty, slab-shaped rocks have defied classification, not fitting into any of the existing groupings drawn up for meteorites. Researchers are pondering where in our Solar System the meteorites could have originated. The current best estimate is that they are not from a major planetary body, but from an astroid instead.
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