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Cosmological Constant Introduced

Einstein adds the cosmological constant to his gravitational field equations to permit a static universe, creating the mathematical term later associated with dark energy.

Albert Einstein lecturing in Vienna in 1921
Albert Einstein lecturing in Vienna, 1921. Photograph by Ferdinand Schmutzer — public domain. Wikimedia Commons source.
Read the explainer →Year 1917General RelativityAstronomy

Cosmological Constant Introduced

1917 · General Relativity · United States of America · Astronomy

Einstein adds the cosmological constant to his gravitational field equations to permit a static universe, creating the mathematical term later associated with dark energy.

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