The variations
in the CMB's temperature also
trace out slight fluctuations
in the density of the nascent
universe, which eventually seeded the
galaxies.
«Herschel has offered us a new view of the hitherto hidden
universe, pointing us to a previously unseen process of star birth and
galaxy formation, and allowing us to
trace water through the
universe from molecular clouds to newborn stars and their planet - forming discs and belts of comets,» ESA's Herschel project scientist Göran Pilbratt said
in a statement.