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名前:Madison日付:2014/12/26 15:31:30
Can I use your phone? write analysis essay Comets donâÂÂt occur that frequently in the night sky. There are usually only one or two sightings a year, explains West. Comet Ison, also called the âÂÂComet of the Centuryâ is predicted to appear later on this year. Ison is a âÂÂsun-grazerâ says West â this means that itâÂÂs not clear if the icy ball will survive its close passage to the sun.