Lucas Ellerbroek maps the star formation process from large to small scale. First, he describes a typical birth environment, a so-called star cluster, before zooming in on a number of individual systems in this and other star formation regions. Ellerbroek also explores the components that make up these objects, such as the disk, jets and the young star itself. By treating the direct environment of the star as a crime scene, Ellerbroek seeks to determine how the star was formed and which stage of its life is has reached. His goal is to describe the formation and evolution of stars as a function of their mass and their surroundings.