Physics Department Colloquia (August 20 through October 31) Tuesday, September 23 3:30 PM I. Zeljkovic Colloquium: Imaging symmetry breaking at the atomic scale in kagome superconductors Tuesday, October 7 3:30 PM J. Kondev Colloquium: The Scale Invariant Cell Tuesday, October 14 3:30 PM C. Rodriguez Colloquium: Growing Big Black Holes in Dense Star Clusters Tuesday, October 21 3:30 PM K. Perez Colloquium: Probing the Dark Universe with X-ray Optics Tuesday, October 28 3:30 PM L. Fu Colloquium: Electrons in Pairs and Fractions: New Phases in 2D Quantum Materials