The space between the stars contains objects in which physical processes occur that are fundamental to galaxies. This book examines these processes and presents simple numeric estimates of the main quantities relevant to the  interstellar medium. 

The space between the stars contains objects in which physical processes occur that are fundamental to galaxies. This book examines these processes and presents simple numeric estimates of the main quantities relevant to the  interstellar medium. 

The space between the stars contains objects in which physical processes occur that are fundamental to galaxies. This book examines these processes and presents simple numeric estimates of the main quantities relevant to the  interstellar medium.