Just like in human civilizations the birth rate in the Universe fluctuated over time. When the Universe had reached 2.5 Billion years of its current age of approximately 13.8 Billion years, galaxies produced the majority of all stars ever formed. An international team of astronomers including reasearcher from the Argelander-Institute for Astronomy at the University of Bonn and the Max-Planck-Institute for Astronomy Heidelberg has now vastly improved on previous estimates. The Karl G. Jansky Very Large Array Telescope in New Mexico (USA) allowed to undertake a survey of distant galaxies that produced unprecendentedly detailed and deep radio views over a very large celestial area. The results will now be published in a special edition of the journal „Astronomy & Astrophysics“.