Lyman
Spitzer

Princeton






Steven Andrew
Balbus

Oxford (Astronomy Tree)




Lyman
Spitzer

Princeton






Elis
Strömgren

Copenhagen University




Max
Born

Edinburgh


Niels
Bohr

Copenhagen University


Ralph H.
Fowler

Cambridge


Edward Arthur
Milne

Oxford (MathTree)












Steven C.
Cowley

UCLA (Astronomy Tree)



Matthew W.
Kunz

Princeton
(Options)

Matthew KunzX