Planetary Astrophysics is a very new science accelerated by the various missions across the Solar System to study the systems more closely. Strong resurgence in this field began in the early 1960's as NASA initiated its program of lunar and planetary exploration by spacecraft. Some of the deeply researched topics are protoplanetary disks, planetary systems, dynamics of planetary atmospheres, volcanoes of Io, etc. It will be a pleasure to learn this.
Stellar Astrophysics is the primary love of all aspiring astronomers. The enthralling field is led by theoretical and observational work in understanding the various aspects of stars. Some of them are stellar atmospheres, nuclear reactions, stars and their different types. Ongoing research areas include asteroseismology, globular clusters, open clusters, stellar convection, white dwarfs, cataclysmic variables,etc. It is the first stepping stone towards astronomy. This area will be detailed and very important.
Galactic Astrophysics is the study of important processes that govern the evolution of galaxies and how exactly they work. The upcoming research areas include molecular clouds, circumstellar environments, galactic center.
Most students in the science stream have once been great admirers of cosmology,particle physics and astronomy. These three topics are dependant on one another in our understanding of the universe. Usually we do not get the right mentors to guide us on how to ease ourselves into one of the most fascinating sciences. As an enthusiast myself I have seen people favoring popular science books on real informative ones. This website is a platform for real-time study of astronomy though notes and excercises. These are made after a thorough read of the prescribed astrophysics books as per cirriculum followed by universities worldwide.