Sotheby’s is known for auctioning off rare and utterly unique items. In the past they’ve showcased limited edition Bang & Olufsen speakers alongside other interesting collectibles. Its most recent auction, which just weeks away, will be drawing in space enthusiasts with its collection of distinct memorabilia. But most notably for Sotheby’s Space Exploration Auction, the organization is presenting arguably one of the rarest pieces of space memorabilia out there: a piece of the moon itself.

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