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
HEAT 1X Tycho Brahe successful tests of the solid fuel epoxy and the liquid oxidizer nitrous oxide, which was used in their hybrid rocket HATV ("Hybrid Atmospheric Test Vehicle"). The HATV rocket was only 1/3 size of the final rocket, HEAT. This HEAT rocket ("Hybrid Exo Atmospheric Transporter") with liquid oxygen and polyurethane, would carry the MSC ("the micro-spacecraft") above the 100 km boundary and into space. The MSC was named after Tycho Brahe, and the combination was known as the HEAT-1X TYCHO BRAHE. Gravity would then pull the MSC back to the atmosphere, where the MSC landed on water using parachutes. The first