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Monday, June 27, 2022

Basic timeline of dark energy

This post is a basic timeline of dark energy. There are 7 events listed below chronologically.

• 1915: Albert Einstein considers the possibility of a cosmological constant in the field equations of general relativity
• 1922: Alexander Friedmann proposes the Friedmann equations
• 1929: Edwin Hubble observes that the universe is expanding
• 1964: Arno Penzias and Robert Woodrow Wilson discover the cosmic microwave background
• 1980: Alan Guth and Alexei Starobinsky propose a negative pressure field for cosmic inflation
• 1988: Michael Turner coins the term 'dark energy'
• 1998: Saul Perlmutter, Brian Schmidt and Adam Riess lead the High-Z Supernova Search Team and observe that the universe is expanding

Sources

Wikipedia: Dark energy, Friedman equations, Cosmic microwave background

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