De pie de izquierda a derecha: Oskar Klein, William Wilson Morgan, Fred Hoyle, Kukaskin, Viktor Hambardsumjan, Hendrik Christoffel van de Hulst, Fierz, Allan Rex Sandage, Walter Baade, Schatzman, John Archibald Wheeler, Hermann Bondi, Thomas Gold, Herman Zanstra, Léon Rosenfeld, Ledoux, Bernard Lovell, Jules Géhéniau.