The sentence "the quick brown fox jumps over the lazy dog" uses every letter in the english language.

The seventeenth president of the United States, Andrew Johnson did not know how to read until he was 17 years old.

There are mirrors on the moon. Astronauts left them so that laser beams could be bounced off of them from Earth. These beams help give us the distance to the moon give or take a few metres.

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