Physicist
Albert Einstein
Cosmology & Universe
Biography
Albert Einstein reshaped our understanding of space, time, and gravity. His 1905 theory of special relativity and 1915 theory of general relativity form the foundation of modern cosmology, predicting the expansion of the Universe, black holes, and gravitational waves. His cosmological constant, introduced in 1917 and long dismissed, returned as the leading description of dark energy.
Developed
Knowledge connections
- DevelopedThe Cosmological Constant (Λ)
- DevelopedSpacetime
- DevelopedSpecial Relativity
- DevelopedGeneral Relativity
Sources & references
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.
- BritannicaEncyclopaedia Britannica
General reference for the history of astronomy, biographies, and cultural context.