BS was an expert in many fields: He was also an astrophysics PhD. IMO he was interested in how the world worked and he wanted to be on earth for ever if he could.Keep in mind that BS was an expert in pharmacology which would be useful in such a situation - JMO.
Sherman won a national physics contest while attending the Forest Hill Collegiate Institute and graduated with top marks. In the summer of 1958, he signed up for a Canadian Army organized student militia, but found he didn't like submitting to authority. The same year, he entered the University of Toronto's (U of T) engineering science program, at age 16 he was one of the youngest students ever to join the University’s Engineering Science program. Sherman later wrote that he chose that program specifically because it was reputedly the university's hardest.
During summers, Sherman worked for his uncle, Louis Lloyd Winter, at Winter's company Empire Laboratories, then Canada's largest wholly owned pharmaceutical company. Sherman worked as a driver, primarily picking up urine samples for pregnancy tests. When his uncle would travel, Sherman often helped watch over the operations.
Sherman graduated from U of T in 1964 with the highest honours in his class, and received the university's Governor General's Award for his thesis. He then enrolled at the Massachusetts Institute of Technology, from which he received a PhD in astrophysics in 1967.[19
In practice, modern astronomical research often involves a substantial amount of work in the realms of theoretical and observational physics. Some areas of study for astrophysicists include their attempts to determine the properties of dark matter, dark energy, black holes, and other celestial bodies; and the origin and ultimate fate of the universe. Topics also studied by theoretical astrophysicists include Solar System formation and evolution; stellar dynamics and evolution; galaxy formation and evolution; magnetohydrodynamics; large-scale structure of matter in the universe; origin of cosmic rays; general relativity, special relativity, quantum and physical cosmology, including string cosmology and astroparticle physics.