jo 4 , io S ] TyMs System of the World 



137 



Coppernican system introduced, but was unable to answer 

 two of the serious objections ; he regarded any motion of 



K 



H 



FIG. 52. Tycho's system of the world. From his book on the 

 comet of 1577. 



" the sluggish and heavy earth " as contrary to " physical 

 principles," and he objected to the great distance of the 



