L'Hypothèse de l'Atome primitif (The Primeval Atom – an Essay on Cosmogony); Georges Lemaître (1946); collection of the Musée L, Ottignies-Louvain-la-Neuve; Belgium
<a href="//commons.wikimedia.org/wiki/User:JoJan" title="User:JoJan">JoJan</a>
CC BY 4.0
<span class="int-own-work">Self-photographed</span>