He is a fast though interesting and coherent lecturer. He is also good at bringing up various current events in astronomy and it really feels like we are at the forefront of the field in the class.

Homework and tests are absurdly easy: really not much harder than high-school physics. He gives you any equation with more than three variables to use on the tests: which have calculational type questions that are just like those in the homework and conceptual questions that basically just make sure that you were paying attention in class and reviewed the material before the test.

I would definitely not recommend taking this particular class unless you like astrophysics, as it goes pretty fast, though I cannot imagine Larkin being very difficult as a Astro 3 professor. Good class and good professor.