The "cosmic web" made of individual galaxies and groups of galaxies arranged in filaments and pancakes is our best probe of the distribution of the dark matter in the Universe. Cosmography of dark and luminous matter as revealed by peculiar motions of galaxies (deviations from a pure Hubble flow) will be discussed in the lecture series.
Professor Brent Tully is a world leading astronomer with many important discoveries carrying his name. Among those is the Tully-Fisher relation between intrinsic properties of spiral galaxies. It is the main tool for measuring galaxy distances with a billion light year from us and is the foundation for most of what we know about the (peculiar) motions of matter in the Universe. He is also the discoverer of the "enigmatic" Tully void (nearby volume of the universe with an usually low density of galaxies). Tully's void has triggered an immense theoretical interest, as a challenge to the standard paradigm for structure formation. He is the recipient of the 2014 Gruber Prize. | 
