America accidentally dropped an atom bomb on South Carolina in 1958.

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The Moon has moonquakes, just like the Earth has earthquakes. The strongest of them registered a 5.5 on the Richter scale - strong enough to move heavy furniture. And they continued for over 10 minutes!

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The Spanish national anthem has no words. The 'Marcha Real' is one of only four national anthems in the world (along with those of Bosnia and Herzegovina, Kosovo, and San Marino) to have no official lyrics.

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