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On this day in 1724 – April 22nd – the German philosopher Immanuel Kant was born in Königsberg (now Kaliningrad, Russia).

His theoretical work in astronomy and cosmology anticipated and inspired later discoveries about our Galaxy and others, including the idea that the Solar System was a part of a system of stars constituting a lens-shaped galaxy, and that there were many other galaxies scattered throughout and making up the whole Universe.


Mona Evans
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