Density and Destiny

0. Theory: Dicke Coincidences
1. Observation: galaxy surveys
   a fair sample of mass/light?
   
   • galaxy halos: rotation curves:
     
     • the pioneers: Fritz Zwicky, Vera Rubin
       
     • geometry of the problem
     • M33: optical, with 21-cm rotation curve
     • NGC 2997: optical global and zoom; hot off the slit spectrograph
     • typical rotation curves examples, by galaxy type
   • clusters
2. Observation: CMB anisotropies
   WMAP 2007 cosmological parameters

Relativity for the Impatient Cosmologist

Spacetime and Special Relativity

• events, space, and time in pre-relativity physics
• Galilean invariance
• Lorentz invariance
• spacetime
• the interval
• invariance vs covariance