IMPRS-HD was established 2004 and started its academic activities 2005. Six Heidelberg astronomy-related institutes take part - the Max Planck Institute for Astronomy (MPIA), the Max Planck Institute for Nuclear Physics (MPIK), the Astronomisches Rechen-Institut (ARI), the Landessternwarte Königstuhl(LSW), the Institute for Theoretical Astrophysics (ITA), and the Heidelberg Institute for Theoretical Studies (HITS).