To discover more fascinating science content, head to bbc.co.uk, search for BBC Inside Science and follow the links to The Open University.
Established in 1951 by Hartwig's grandfather Floyd, Twig's signature product is Sun Drop, a citrus-flavoured soft drink developed in 1940s Missouri.
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A key part of the Orion spacecraft that the astronauts will be flying in was made in Bremen in Germany.