Changes

==Beliefs==

==Beliefs==

Einstein's revised his work on [[General Relativity]] to include a '[[fudge-factor]]' which he termed the [[Cosmological Constant]]. He was trying to account for the apparent state-state nature of the universe.

 

Einstein's initial [[philosophy]] of [[Cosmology]] led him to revise his work on [[General Relativity]] to include a '[[fudge-factor]]' which he termed the [[Cosmological Constant]], and which allowed the [[Steady-State Universe]] model--which Einstein originally accepted--to be accounted for.

[[Edwin Hubble]], of whom [[NASA]]'s famous [[Hubble Space Telescope]] is named in honor, later convinced him otherwise.  At one point he had Einstein actually making direct [[observation]]s alongside him, and Hubble's [[finding]]s showed conclusively that the [[universe]] was indeed [[expand]]ing, as predicted by certain solutions of GR's field equations in the absence of a cosmological constant.  Einstein recanted his original [[philosophy]], and accepted as true the notion of a changing [[universe]] having a definite [[begin]]ning.

[[Edwin Hubble]], of whom [[NASA]]'s famous [[Hubble Space Telescope]] is named in honor, later convinced him otherwise.  At one point he had Einstein actually making direct [[observation]]s alongside him, and Hubble's [[finding]]s showed conclusively that the [[universe]] was indeed [[expand]]ing, as predicted by certain solutions of GR's field equations in the absence of a cosmological constant.  Einstein recanted his original [[philosophy]], and accepted as true the notion of a changing [[universe]] having a definite [[begin]]ning.

He later said of the Cosmological Constant, <nowiki>"It was the biggest blunder of my life.”</nowiki>

He later said of the Cosmological Constant, <nowiki>"It was the biggest blunder of my life."</nowiki> A cosmological constant of the opposite sign is now commonly accepted among cosmologists as a way of explaining the accelerating expansion of the universe.

==Criticisms==

==Criticisms==