Mr Pitt, whose day job is managing the careers of musicians, built up the collection (which now includes stones from more than 500 falls) by buying specimens, and also by swapping them with museums.

皮特日常从事音乐事业，他通过购买标本和与博物馆交换来收藏（现已包括至少500次撞击中的陨石）。

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Yes Scotland, which includes the SNP and other supporters of independence, marked the 500 day countdown by announcing a major stepping up of its communities campaign.

BBC: Scottish independence