In December of that year, Tycho invited Kepler to visit him in Prague; on January 1, 1600 (before he even received the invitation), Kepler set off in the hopes that Tycho's patronage could solve his philosophical problems as well as his social and financial ones.
I december samme år inviterede Brahe Kepler på besøg i Prag; 1. januar 1600 (før han overhovedet modtog invitationen) tog Kepler af sted i det håb, at Brahes mæcenat kunne løse hans filosofiske problemer såvel som hans sociale og finansielle.