Abstract. Large-scale scientific investigation often includes collaborative data exploration among geographically distributed researchers. The tools used for this exploration typically include some communicative component, and this component often forms the basis for insight and idea sharing among collaborators. Minimizing the tool interaction required to locate “interesting” communications is therefore of paramount importance. We present the design of a novel visualization interface for representing the communications among multiple collaborating authors, and detail the benefits of our approach versus traditional methods. Our visualization integrates directly with the existing data exploration interface. We present our system in the context of an international research effort conducting collaborative analysis of accelerator simulations.