| http://www.w3.org/ns/prov#value | - Triton ??? ??? ??? Charon is a moon of Pluto. ??? ??? ??? The largest known asteroid is Ceres. ??? ??? ??? When a meteoroid enters Earth's atmosphere, it is called a(n) meteor or "shooting star ??? ??? ??? When a meteor strikes Earth's surface, it is called a(n) meteorite ??? ??? ??? The seriousness of an asteroid collision is gauged by the _________ scale.
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