Complex sentence: Conwell received her physics Ph.D. in 1948, from the University of Chicago under the advisement of Nobel Laureate Subrahmanyan Chandrasekhar at Yerkes Observatory and was also an assistant to Enrico Fermi.
Split into simpler sentences: Conwell received her physics Ph.D. in 1948, from the University of Chicago under the advisement of Nobel Laureate Subrahmanyan Chandrasekhar at Yerkes Observatory. During her doctoral work she was also an assistant to Enrico Fermi.