A 57-year-old man received the first transplanted heart from a genetically modified pig.
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Galileo discovered the first three satellites of Jupiter.
The US celebrated the opening of the country's first railroad station in Baltimore.
The Sahara desert was blanketed in snow.
Black men were chased away by gunmen after trying to rescue white survivors during a mine explosion.
French forces attacked Calais and took it back from English rule.
