Notes from individual lectures, as well as the full lecture notes, are available (as PDFs) below.

While it is possible to appreciate astronomy with images and qualitative descriptions, the goal of this course is to gain access to the deeper level of beauty and understanding that …

There are five main chapters to this document – one each to introduce the astronomy and planetary science, the cosmology and the physics background, plus two chapters of …

These notes were written while teaching a graduate-level astronomy course on stars at Michigan State University. The only background preparation for this course is undergraduate physics …

This common framework will be very useful for future PhD students in astronomy and astrophysics, aiming at studying stellar structure, star formation and the interstellar medium, …

The need for a new form of “dark matter” to describe correctly the formation and dynamics of galaxies requires a yet unknown extension of the current standard model of elementary …

Download free PDF books on astrophysics right now. If you’re fascinated by the mysteries of the universe and want to explore this exciting field of study, you’re in the right place.

Astrophysics: effort to understand the nature of astronomical objects. Union of quite a few branches of physics — gravity, E&M, stat mech, quantum, fluid dynamics, relativity, nuclear, …

This is a collection of open-licensed, freely available texts on various topics in astrophysics. You are free to use them as-is, make mash-ups of different texts, or contribute back to their …

As stellar astrophysics has developed, attention has increasingly become focused on the details and refinements that make the current models of stars so quantitatively accurate.