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		| Paper: | 
		The Contribution of V. M. Slipher to the Discovery of the Expanding Universe | 
	 
	
		| Volume: | 
		471, Origins of the Expanding Universe: 1912-1932 | 
	 
	
		| Page: | 
		49 | 
	 
	
		| Authors: | 
		O'Raifeartaigh, C. | 
	 
	
	
		| Abstract: | 
		A brief history of the discovery of the expanding universe is
 presented, with an emphasis on the seminal contribution of V. M. Slipher. It is
 suggested that Hubble's ‘discovery graph’ of 1929 could also be known as the
 Hubble-Slipher graph. It is also argued that the discovery of the expanding
 universe matches the traditional view of scientific advance as a gradual process
 of discovery and acceptance, and does not concur with the Kuhnian view of
 science progressing via abrupt paradigm shifts. | 
	 
	
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