Giant space blob glows from within: Primordial cloud of hydrogen is centrally powered
Wednesday, August 17, 2011 - 13:30
in Astronomy & Space
Observations from ESO's Very Large Telescope have shed light on the power source of a rare vast cloud of glowing gas in the early universe. The observations show for the first time that this giant "Lyman-alpha blob" -- one of the largest single objects known -- must be powered by galaxies embedded within it.