Georges Lemaitre Biography

Lemaitre studies relativistic cosmology and begins work that will connect general relativity to cosmic expansion

Lemaitre derives an expanding universe model from general relativity and estimates an expansion rate

Proposes an expanding universe from relativistic cosmology.

Lemaitre develops an expanding relativistic universe in which the cosmological constant can influence the large-scale evolution of cosmic expansion.

Lemaitre derives an expanding universe model and estimates the expansion rate from galaxy distances and velocities

Lemaitre proposes a primeval atom origin for the expanding universe within relativistic cosmology

Lemaitre proposes that the universe expanded from a primeval atom, an early form of Big Bang theory

Lemaitre lectures in the United States on the expanding universe and his primeval atom hypothesis

Connects cosmic rays with processes in the early expanding universe.

Develops the primeval-atom model with radioactive cosmic evolution.

Lemaitre relates the cosmological constant to an energy density of empty space, anticipating the modern vacuum-energy interpretation of dark energy.

Explains cosmic expansion from an extremely dense initial state.

Publishes a book presenting his primeval-atom cosmological theory.