Val d'Orcia - 2017 June

Barbara Sue Ryden

Cosmos Mariner: Destination Unknown

I received a BA ('83) from Northwestern University, where I was a student in the Integrated Science Program. My PhD ('87) is from the department of astrophysical sciences at Princeton University. I served terms as a postdoc at the CfA and CITA. I am currently a professor in the department of astronomy at The Ohio State University, where I serve as a facilitator at AstroCoffee. My main research interests are in galaxies and in the large scale structure of the universe. My textbook Introduction to Cosmology (1st edition ©2003, 2nd edition ©2017), won the Chambliss Astronomical Writing Award of the American Astronomical Society. Foundations of Astrophysics, written with Brad Peterson, was published in 2009. I am currently at work on the Ohio State Graduate Astrophysics Series, a set of ebooks based on the graduate curriculum of the Ohio State University astronomy department. For more details of my life, grab a copy of my curriculum vitae (PDF: updated 2017 Jul).

Florence - 2017 June

Introduction to CosmologyInternational EditionJapanese translationSecond EditionFoundations of AstrophysicsInternational Edition

Ohio State Graduate Astrophysics Series

Interstellar and Intergalactic MediumDynamicsStellar Structure and Evolution

Now available:

Upcoming volumes:

Courses I have taught:

Courses my department chair has prudently prevented me from teaching:

Barbara Ryden (

Last revised: 2017 Jul 5

Cat treats: Pictures of my two cats, Chip and Trim.