http://www.ras.org.uk/html/press/pn0401ras.html Date: 2 February 2004 Issued by Peter Bond, RAS Press Officer (Space Science). Contact details for this release are listed at the end. CORRUPTED ECHOS FROM THE BIG BANG? Are Galaxy Clusters Corrupting the Echoes from the Big Bang? In recent years, astronomers have obtained detailed measurements of the cosmic microwave background radiation - the 'echo' from the birth of the Universe during the Big Bang. These results appear to indicate with remarkable precision that our Universe is dominated by mysterious 'cold dark matter' and 'dark energy'. But now a group of UK astronomers has found evidence that the primordial microwave echoes may have been modified or 'corrupted' on their 13 billion year journey to the Earth.