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Which one of these is NOT a recent astronomical discovery?
Elements Necessary
Fundamental components or conditions required for a legal claim, contract, or other judicial act to be valid or enforceable.
Hula Hoop
A toy hoop that is twirled around the waist, limbs, or neck, popularized in the 1950s.
Rebate
A partial refund to someone who has paid too much money for tax, rent, or utility.
Auction Without Reserve
A type of auction in which the item for sale will be sold regardless of the price since there is no minimum bidding threshold set.
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