Tycho Brahe days days in the year pregnant with misfortune, wherefore in Denmark, up to this very day, the laboring class call such days on which they happen to meet with some unfortunate accident, Tycho Brahe's days." In his travelogue "A Poet's Bazaar", Hans Christian Andersen alludes to the fact that Tycho Brahe died in exile in Prague, observing that "Denmark owns not even his dust; but the Danes mention his name in their bad times, as if a denunciation proceeded out of it: 'These are Tycho Brahe's days!' say they." However, no mention of the Tycho Brahe days is actually found in
Tycho Brahe manuscripts, on locally made paper with his own watermark. He created a system of ponds and canals to run the wheels of the paper mill. Over the years he worked on Uraniborg, Tycho was assisted by a number of students and protegés, many of whom went on to their own careers in astronomy: among them were Christian Sørensen Longomontanus, later one of the main proponents of the Tychonic model and Tycho's replacement as royal Danish astronomer; Peder Flemløse; Elias Olsen Morsing; and Cort Aslakssøn. Tycho's instrument-maker also formed part of the scientific community on the island. He observed the great