Editing Subrahmanyan Chandrasekhar (section)

===Work with students===

Chandra worked closely with his students and expressed pride in the fact that over a 50-year period (from roughly 1930 to 1980), the average age of his co-author collaborators had remained the same, at around 30. He insisted that students address him as "Prof. Chandrasekhar" until they received their PhD degree, after which time they (as other colleagues) were encouraged to address him as "Chandra". When Chandrasekhar was working at the Yerkes Observatory in 1940s, he would drive {{convert|150|mi|km}} to and from every weekend to teach a course at the University of Chicago. Two of the students who took the course, [[Tsung-Dao Lee]] and [[Chen-Ning Yang]], won the Nobel prize before he could get one for himself. Regarding classroom interactions during his lectures, noted astrophysicist [[Carl Sagan]] stated from firsthand experience that "frivolous questions" from unprepared students were "dealt with in the manner of a summary execution", while questions of merit "were given serious attention and response".<ref name="C.)-1991">{{Cite book|title=Chandra : a biography of S. Chandrasekhar| last=Wali | first=Kameshwar C. |date=1991|publisher=University of Chicago Press|isbn=978-0226870540|location=Chicago|pages=[https://archive.org/details/chandrabiography0000wali/page/9 9]|oclc=21297960|url=https://archive.org/details/chandrabiography0000wali/page/9}}</ref>