ISLAND UNIVERSES COLLIDING

Author(s):  
L. Snijders ◽  
P.P. van der Werf
Keyword(s):  

2004 ◽  
Vol 47 (1-2) ◽  
pp. 95-109
Author(s):  
Milan Cirkovic

In this paper we briefly consider the role Kant's early philosophy, and notably his "island universes" hypothesis played in the history of astronomy. There are many reasons for this, including the coincidence of Kant's jubilee year with 80 years since Hubble's discovery (1924) of the extragalactic universe. This discovery, confirming the "island universes" hypothesis revolutionized our picture of the physical universe. Prehistory of this revolution has another aspect, apart from the historical one, of significance for philosophy: it presents one of the best supported and empirically documented instances of the application of the Duhem-Quine thesis on subdetermination of theory by experiments.



Author(s):  
John Marsh

By awe, philosophers and psychologists mean the sensation that overcomes someone in the presence of something simultaneously vast, powerful, and, when compared to humans, strangely humbling. The chapter begins with a review of amazing discoveries such as island universes, the expanding universe, and the Big Bang that altered the understanding of the universe and made the solar system “seem but a speck of dust in infinite space.” It then turns to other sources of awe, or the Depression sublime: the Empire State Building; Jesse Owens’s record-setting long jump at the 1936 Berlin Olympics; the moral heroism of the Joads in John Steinbeck’s The Grapes of Wrath; and James Agee and Walker Evans’s deification of tenant farmers in Let Us Now Praise Famous Men. Whereas most accounts of the sublime involve the vastness of nature overwhelming human beings, during the Depression human beings themselves became a source of the sublime.



2010 ◽  
Vol 25 (25) ◽  
pp. 2131-2143 ◽  
Author(s):  
MERAB GOGBERASHVILI ◽  
DOUGLAS SINGLETON

We construct simple standing wave solutions in a 5D spacetime with a ghost-like scalar field. The nodes of these standing waves are "islands" of 4D anti-de Sitter spacetime. In the case of increasing (decreasing) warp factor, there are a finite (infinite) number of nodes and thus a finite (infinite) number of anti-de Sitter island-universes having different gravitational and cosmological constants. This is similar to the landscape models, which postulate a large number of universes with different parameters.







1928 ◽  
Vol 14 (381) ◽  
pp. 57
Keyword(s):  


1934 ◽  
Vol 26 (703) ◽  
pp. 198
Keyword(s):  


1998 ◽  
Vol 11 (1) ◽  
pp. 447-448
Author(s):  
A.P. Fairall

As we approach the 21st Century, enormous technical advances are being made in the acquisition of galaxy redshifts. This Joint Discussion offers a perspective on those advances and the associated redshift surveys. It is representative, but by no means all inclusive. My introduction offers some historical background, against which the new methods and achievements can be measured. Redshift surveys tells us about the spatial distribution and evolution of galaxies. Yet the study of large-scale structures in the distribution of galaxies goes back further than one might imagine. The first accurate description of the Virgo Supercluster was given by John Herschel in the mid-19thCentury. To paraphrase Sir John, “Virgo is the central condensation of a roughly spherical cluster of nebulae - our system lies outside the denser part of the cluster, but is involved with its outlying members - forming an element of some one of its protuberances or branches”. Victorian science might have beaten Hubble had more people believed John Herschel - and had he himself more confidence in his interpretation. Few were prepared to accept the ‘Island Universe’ theory that it implied, and strong criticism followed. Moreover, Herschel was very reluctant to go against the beliefs of his revered father, William Herschel, who, though once believing in the ‘Island Universes’, had in later life accepted that all nebulae were somehow gaseous condensations in our system. Consequently, even John Herschel’s textbook still stated the older, incorrect interpretation.



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