Master of Philosophy
Indian universities offer M.Phil degrees mostly in the streams of arts, science and humanities. The duration is typically two years long. Several universities offer enrolment in their integrated M.Phil-Ph.D program and M.Phil degree holders are usually exempted from doctoral coursework requirement.
Graduate school
For the next several years the doctoral candidate primarily performs his or her research. Usually this lasts three to eight years, though a few finish more quickly, and some take substantially longer. In total, the typical doctoral degree takes between four and eight years from entering the program to completion, though this time varies depending upon the department, dissertation topic, and many other factors. For example, astronomy degrees take five to six years on average, but observational astronomy degrees take six to seven due to limiting factors of weather, while theoretical astronomy degrees take five.