Engraving of a view of the Royal Naval College at Greenwich, with the Royal Observatory beyond. Above is the Milky Way in the night sky, and below is an index map to the constellations. From 'The Midnight Sky: Familiar Notes on the Stars and Planets' by Edwin Dunkin (1821-1898), published in London in 1891. Due to light pollution, such a sight has not been visible in London for some years.
© Science Museum / Science & Society Picture Library