![Artist's impression of a protocluster of galaxies in the early Universe Artist's impression of a protocluster of galaxies in the early Universe](/sites/default/files/styles/crop_square_2_2_to_320px/public/images/news/eso1431a.jpg?h=384eda5e&itok=81A2-AaA)
An international research team, led from the Instituto de Astrofísica de Canarias (IAC) and the University of La Laguna (ULL) together with a group of Italian universities, has confirmed a new method for finding protoclusters of galaxies, the largest structures in the early universe. These progenitors of present-day clusters of galaxies played an essential role in the evolution of the universe, but are not easy to find. This study shows that a specific type of galaxies, those which emit radiation at submillimetre wavelengths, are very good indicators of the presence of distant protoclusters
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