Comet over Paris, 19 March 1843.
© Science Museum / Science & Society Picture Library
'The Large Comet of 1843' seen in the night sky above Paris. The 'Great March Comet', also known as C/1843 D1, reputedly had a tail of of 330 million km (206 million miles). Illustration from 'The World of Comets' by Amedee Guillemin (1826-1893), published in London in 1877.