Negli anni seguenti furono aggiunti molti dettagli alla teoria di Bethe, come un famoso articolo del 1957 pubblicato da Margaret Burbidge, Geoffrey Burbidge, William Fowler e Fred Hoyle. ###>Quickly, Hoyle's theory was expanded to other processes, beginning with the publication of a celebrated review paper in 1957 by Burbidge, Burbidge, Fowler and Hoyle (commonly referred to as the B2FH paper).