Italian astronomer Giovanni Donati became the first person to observe the spectrum of a comet.
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The world's first lab-grown bovine stem cell burger was consumed in London.
Foundations were placed on Bedloe's Island, New York City, to become home of the Statue of Liberty.
The Battle of Tettenhall occurred, where the final major Viking army battled against England and was defeated by a landslide.
British graffiti artist Banksy created the first in a series of animal artworks in London.
Nelson Mandela returned to South Africa and was arrested for illegally leaving the country.
