Editorial note to "The beginning of the world from the point of view of quantum theory"

Understand

This is an editorial note to accompany reprinting as a Golden Oldie in the Journal of General Relativity and Gravitation of the famous note by Georges Lemaitre on the quantum birth of the universe, published in Nature in 1931.

• We explain why this short (457 words) article can be considered to be the true "Charter" of the modern Big Bang theory.