Battle of the Mass Estimators (Based on Bahcall and Tremaine, 1981) Nick Cowan UW Astronomy January 25, 2005.
The Expanding Universe. Getting the Distances to Galaxies is a “Big Industry” solar system 10 A.U. radar ranging Local Galaxy 100 pc stellar parallax.
Data Logistics in Particle Physics Ready or Not, Here it Comes… Prof. Paul Sheldon Vanderbilt University Prof. Paul Sheldon Vanderbilt University.
What is the Universe Made of?
North America at night from space
The Milky Way Galaxy