Video encyclopedia

22/09/1959 American astrophysicist Saul Perlmutter is born


NERSC Nobel Lecture Series: Saul Perlmutter Lecture, June 11th, 2014


Berkeley Prof. Saul Perlmutter's Nobel Morning


Saul Perlmutter - Does Cosmology Provide Meaning?


Saul Perlmutter - What Does an Expanding Universe Mean?


What does it mean for the Universe to expand? Saul Perlmutter on dark energy

Perlmutter provided (together with Brian Schmidt and Adam Riess) evidence that expansion of the universe is accelerating. This was one of the greatest science discoveries on the end of the 20th century. It required to use positive value of the cosmological constant lambda (Λ). The constant was invented by Einstein to make universe stationary in his equations.
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