Supernovae, Dark Energy, and the Accelerating Universe | Zendy

S. Perlmutter | Zendy

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Supernovae, Dark Energy, and the Accelerating Universe

Author(s) -

S. Perlmutter

Publication year - 2003

Publication title -

physics today

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.594

H-Index - 112

eISSN - 1945-0699

pISSN - 0031-9228

DOI - 10.1063/1.1580050

Subject(s) - dark energy , supernova , cosmic distance ladder , physics , cosmic cancer database , trace (psycholinguistics) , metric expansion of space , astrophysics , astronomy , universe , cosmology , philosophy , galaxy , redshift , linguistics

or millennia, cosmology has been a theorist's domain, where elegant theory was only occasionally endangered by inconvenient facts. Early in the 20th century, Albert Einstein gave us new conceptual tools to rigorously ad- dress the questions of the origins, evolution, and fate of the universe. In recent years, technology has developed to the point where these concepts from general relativity can be substantiated and elaborated by measurements. For ex- ample, measurement of the remnant glow from the hot, dense beginnings of the expanding universe—the cosmic microwave background—is yielding increasingly detailed data about the first half-million years and the overall geometry of the cosmos (see the news story on page 21 of

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