Paper
1999
Measurements of Omega and Lambda from 42 High-Redshift Supernovae
Saul Perlmutter et al.
Uses distant exploding stars as standard candles to show the universe's expansion is speeding up, requiring a cosmological solution with a dominant dark-energy term.
Read itWhere it is now wrong
The discovery stands; the numbers do not. These 42 supernovae constrained the cosmological parameters loosely beside what CMB and large-scale-structure surveys have since delivered. Read it for the argument that the expansion is accelerating, not for its values of Omega and Lambda.
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Filed under Relativity & Gravitation in Physics.