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Fist-sized stones scattered around Victoria Crater on Mars appear to be meteorites - and might be fragments of the object that punched out the crater, researchers say.

During 2006 Mar - 2007 Jan, we used the IRAC and MIPS instruments on the Spitzer Space Telescope to study the infrared emission from the ensemble of fragments, meteoroids, and dust tails in the more than 3 degree wide 73P/Schwassmann-Wachmann 3 debris field.