mrt 222013
 
‘Sideline Quasars’ Helped to Stifle Early Galaxy Formation

  University of Colorado Boulder astronomers targeting one of the brightest quasars glowing in the Universe some 11 billion years ago say “sideline quasars” likely teamed up with it to heat abundant helium gas billions of years ago, preventing small galaxy formation. This is an artist’s impression of a distant quasar. The dust is hiding the view [continue reading]

feb 012013
 
The Lack of Dwarf Galaxies Explained

  Astronomers of the international CLUES collaboration have identified “Cosmic Web Stripping” as a new way of explaining the famous missing dwarf problem: the lack of observed dwarf galaxies compared with that predicted by the theory of Cold Dark Matter and Dark Energy. Cosmic Web Stripping, Visualization. Image Credit: Alejandro Benitez Llambay High-precision observations over [continue reading]

nov 212012
 
Bridge of Hot Gas Links Two Galaxy Clusters

  ESA’s Planck space telescope has made the first conclusive detection of a bridge of hot gas connecting a pair of galaxy clusters across 10 million light-years of intergalactic space. A bridge of hot gas between galaxy clusters Abell 399 and Abell 401. Credit: Sunyaev-Zel’dovich effect (orange): ESA & Planck Collaboration; optical image: STScI Digitized [continue reading]

okt 162012
 
Dark Matter Filament Studied in 3D for the First Time

  Astronomers using the NASA/ESA Hubble Space Telescope have studied a giant filament of dark matter in 3D for the first time. Extending 60 million light-years from one of the most massive galaxy clusters known, the filament is part of the cosmic web that constitutes the large-scale structure of the Universe, and is a leftover [continue reading]

sep 242012
 
With Artificial Intelligence to the Origins of the Universe

  A team of astronomers, led by Francisco Kitaura from the Leibniz Institute for Astrophysics in Potsdam (Germany), has succeeded to confine the cosmic origins of the distribution of galaxies sharper than ever before. Kitauras method could prove to be a breakthrough for the study of the evolution of the Universe on large scales, and the [continue reading]

jul 052012
 
A Bridge of Dark Matter Detected

  Direct measurement of a dark-matter ‘filament’ confirms its existence in a galaxy supercluster.   A ‘finger’ of the Universe’s dark-matter skeleton, which ultimately dictates where galaxies form, has been observed for the first time. Researchers have directly detected a slim bridge of dark matter joining two clusters of galaxies, using a technique that could [continue reading]