Date	Slides (pdf)	Notes (pdf)	Audio (mp3)
Jan 14	The Missing Mass Problem	Notes	Audio
Jan 16	The Virial Theorm	Notes	Audio
Jan 21	The Oort Discrepancy and Disk Stability	Notes	Audio
Jan 23	The Interstellar Medium	Notes	Audio
Jan 28	Velocity Fields; Stellar Populations	Notes	Audio
Jan 30	Galactic Kinematics	Notes	Audio
Feb 4	Bars, Spirals, & Mergers	Notes	Audio
Feb 6	Flat Rotation Curves	Empirical Laws	Audio
Feb 11	Tully-Fisher	Potential-Density Pairs	Audio
Feb 13	Radial Acceleration Relation		Audio
Feb 18	Dark Matter Halo Models	Notes | NFW halos	Audio
Feb 20	Elliptical Galaxies	Notes	Audio
Feb 25	Phase Space	Notes	Audio
Feb 27	Adiabatic Compression	Notes	Audio
Mar 3	Big Trouble at Little Scales	Notes	Audio
Mar 5	Satellite Planes		Audio
Mar 10, 12	Spring Break
Mar 17	Cancelled by Covid
Mar 19	Review	Notes	zoom
Mar 24	Big Bang Nucleosynthesis	discussion	zoom
Mar 26	Missing Baryons	discussion	zoom
Mar 31	Cluster Mass Estimators	Gravitational Lensing	zoom
Apr 2	MACHOs & Microlensing		zoom
Apr 7	Mass Density & Power Spectra	Peculiar velocities	zoom
Apr 9	CMB & WIMPs	Perturbation growth	zoom
Apr 14	WIMP Detection	WIMPs	zoom
Apr 16	Modified Gravity	MOND	zoom
Apr 21	MOND	MOND Review	zoom
Apr 23	ASTR 433 Presentations		zoom