–The
discovery of the Galaxy
•Variable stars as distance indicators
•Globular clusters
–The
size and overall structure of the Galaxy
–21
cm Hydrogen emission
–Motions
in the galaxy
•The Halo
•The Disk population
–Spiral
Arms
•The Nuclear Bulge
•The Rotation curve and the Galaxy’s mass
–The
origin of the galaxy
–The
Galactic Center