THE origin of two unusual meteorites has been puzzling researchers ever since they were found in Antarctica in 2006. Now they think they have found the culprit – a dwarf planet in our solar system that has apparently fled the scene.
The chemical composition of the rocky fragments – named GRA 06128 and GRA 06129 after the Graves Nunataks area they struck – differs from that of the majority of meteorites, ruling out a shattered asteroid as their source. Nor do they appear to be shards of the moon, Mars, Venus, Mercury, or any other known planet.
The clue that has solved the…
