PROOF OF EXISTENCE OF A SUPRA-WORLD 1 09 



does hold good against an infinite universe of hot 

 stars, which would keep us at a white heat, in spite 

 of our protecting wall. But if a hot star is some- 

 thing altogether exceptional a freak happening 

 once in a billion times then the average tempera- 

 ture of an infinite universe will be quite comfortable, 

 and, indeed, extremely stable and permanent. 



The laws of radiation, therefore, furnish no argu- 

 ment against the existence of an infinite series of 

 galaxies outside our own, so long as we regard the 

 dark star as the prevailing type. But the case may 

 be further investigated by means of the argument 

 from gravitation. 



The Law of Gravitation. Newton's law of gravi- 

 tation asserts that every heavenly body attracts 

 every other heavenly body with a force propor- 

 tional to the product of their masses, and inversely 

 proportional to the square of their distance apart. 

 This law has, so far, been confirmed for distances 

 ranging from 1 cm. to about 10 19 cm. truly a vast 



jo. At distances less than 1 cm. it appears to 

 bo replaced, or, at least, complicated, by the very 

 much more powerful electric forces brought into 

 play, and, as regards distances beyond ten light- 



rs, we have as yet no evidence of its validity. 

 At distances of the order of 10~" cm., a force 10 33 

 times more powerful takes the place of gravitation, 

 and rules the orbits of the infra-world. What 

 happens at distances of 10 22 cm. and beyond? 



