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|isbn=9-789-02-4936-5

|isbn=9-789-02-4936-5

|quote=

|quote=

}}</ref> Before long, after Hubble's interpretation of new discoveries as expanding universe in 1929, the role of cosmological constant aiming to allow static homogeneous solutions to field equations in presence of matter seemed finished. Einstein called <math>\Lambda</math> ''"the biggest blunder of my life"''. In general, a positive <math>\Lambda</math> causes acceleration to the universe expansion, whereas negative <math>\Lambda</math> and ordinary matter tend to decelerate it.<ref name="CSR"/> When the ''Supernova Cosmology Project Collaboration'' and ''High-Z Supernova Team Collaboration'' started their research at the beginning of 1990s, both prevailing mainstream cosmological models assumed decelerating universe scenarios. The processing of collected data from research observations however indicated that the universe is accelerating and requires something like non-zero cosmological constant.<ref name="RiessNobel">{{cite web

}}</ref> Before long, after Hubble's interpretation of new discoveries as expanding universe in 1929, the role of cosmological constant aiming to allow static homogeneous solutions to field equations in presence of matter seemed finished. Einstein called <math>\Lambda</math> ''"the biggest blunder of my life"''.  

In general, a positive <math>\Lambda</math> causes acceleration to the universe expansion, whereas negative <math>\Lambda</math> and ordinary matter tend to decelerate it.<ref name="CSR"/> When the ''Supernova Cosmology Project Collaboration'' and ''High-Z Supernova Team Collaboration'' started their research at the beginning of 1990s, both prevailing mainstream cosmological models assumed decelerating universe scenarios. The processing of collected data from research observations however indicated that the universe is accelerating and requires something like non-zero cosmological constant.<ref name="RiessNobel">{{cite web

|author=A.G.Riess

|author=A.G.Riess

|title=Nobel Prize (in Physics 2011) lecture slides on ''Supernovae Reveal An Accelerating Universe (A Science Adventure Story)''

|title=Nobel Prize (in Physics 2011) lecture slides on ''Supernovae Reveal An Accelerating Universe (A Science Adventure Story)''