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The building of the Astronomical Observatory at Al. Ujazdowskie 4 in the center of Warsaw was constructed between 1820 and 1824. During its bicentennial history, it has been a silent witness to two now-historical events – both the firball of the Pułtusk meteorite in 1868, accompanied by the sounds of the explosion, as well as the light effects associated with the fall of the Łowicz meteorite in 1935...