Max
Born

Edinburgh (Physics Tree)


Niels
Bohr

Copenhagen University (Physics Tree)


Ralph H.
Fowler

Cambridge (Physics Tree)


Edward Arthur
Milne

Oxford (MathTree)




Elis
Strömgren

Copenhagen University (Physics Tree)


Niels
Bohr

Copenhagen University (Physics Tree)


Hans Marius
Hansen

Copenhagen University (Physics Tree)


Otto
Struve

UC Berkeley




Donald E.
Osterbrock

UC Santa Cruz



Mark Eric
Everett

Ohio State
(Options)

Mark EverettX