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      "statement": "# Supernova teams: evidence that cosmic expansion is accelerating\n\nTwo independent supernova programs found distance–redshift evidence consistent with an accelerating cosmic expansion.\n\n## Scientific scope\n\nOne package groups the 1998 Riess and 1999 Perlmutter papers so the same milestone is not counted twice. Inference depends on calibration and cosmological assumptions.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nAdam G. Riess; Alexei V. Filippenko; Peter Challis; Alejandro Clocchiatti; Alan Diercks; Peter M. Garnavich; Ron L. Gilliland; Craig J. Hogan; Saurabh Jha; Robert P. Kirshner; B. Leibundgut; M. M. Phillips; David Reiss; Brian P. Schmidt; Robert A. Schommer; R. Chris Smith; J. Spyromilio; Christopher Stubbs; Nicholas B. Suntzeff; John Tonry; S. Perlmutter; G. Aldering; G. Goldhaber; R. A. Knop; P. Nugent; P. G. Castro; S. Deustua; S. Fabbro; A. Goobar; D. E. Groom; I. M. Hook; A. G. Kim; M. Y. Kim; J. C. Lee; N. J. Nunes; R. Pain; C. R. Pennypacker; R. Quimby; C. Lidman; R. S. Ellis; M. Irwin; R. G. McMahon; P. Ruiz‐Lapuente; N. Walton; B. Schaefer; B. J. Boyle; T. Matheson; A. S. Fruchter; N. Panagia; H. J. M. Newberg; W. J. Couch\n\nFull deposited paper byline or identified author of the scoped historical source. Association does not measure individual effort.\n\n\n\n## Original sources\n\n- [Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant](https://iopscience.iop.org/article/10.1086/300499)\n- [Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant — deposited bibliography](https://api.crossref.org/works/10.1086%2F300499)\n- [Measurements of Ω and Λ from 42 High‐Redshift Supernovae](https://iopscience.iop.org/article/10.1086/307221)\n- [Measurements of Ω and Λ from 42 High‐Redshift Supernovae — deposited bibliography](https://api.crossref.org/works/10.1086%2F307221)\n",
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