ASTRO-110 Chapter Notes - Chapter 7: Cosmological Constant, Static Universe, Recessional Velocity
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Einstein developed his theory of general relativity more than a decade before hubble"s great discovery. Before hubble, everyone was certain the universe was static. Einstein realized he could use his theory to construct simple models of the universe. The results predicted that the universe could not be static. Everything was either moving toward or away from everything else in the universe. Einstein found a way to modify his theory to allow it to predict a static universe adds the cosmological constant. By deciding his theory must be wrong, einstein missed the chance to allow his theory to predict what hubble would observe. When he learned hubble"s discoveries, einstein withdrew his correction his. It makes sense that a larger value for this term can make the universe accelerate its expansion. Hubble"s law isn"t talking about galaxies moving through space, but rather with space as space itself expands *the spacing between galaxies is getting larger.
