Online Astronomy Classes
        Physics 207 on line course with lab 
Galaxies and Cosmology
            
     
        This Oregon State University e-course begins by examining our own galaxy, the Milky Way.
            We then look at galaxies in general, discerning between different kinds of galaxies and
            discussing their formation and evolution, and the role that dark matter plays.
            We go on to consider the universe as a whole. We will look at the current state of the mapping
            of the universe and its large scale structure. We will then look at its creation and evolution, and
            finish by considering extrasolar life.
               
            
              
            
           Dark matter halo
               http://apod.nasa.gov/apod/ap070516.html