Fred
Hoyle

Cambridge


Leon
Mestel

Trinity College, Cambridge


Leon
Mestel

Trinity College, Cambridge


Allan Rex
Sandage

Mount Wilson-Palomar (Physics Tree)




Kenneth C.
Freeman

ANU (Physics Tree)






Lyman
Spitzer

Princeton


Leonard
Searle

Carnegie Observatories


Arthur Stanley
Eddington

Cambridge (MathTree)




Richard van der Riet
Woolley

Mount Stromlo Observatory








Bart J.
Bok

University of Arizona





Stefan Claude
Keller

ANU
(Options)

Stefan KellerX