apr 042013
 
Green Pea Galaxies May Give Insight in the Early Universe

  The rare Green Pea galaxies discovered by the general public in 2007 could help confirm astronomers’ understanding of reionization, a pivotal stage in the evolution of the early Universe, say University of Michigan researchers. A montage of the six Green Pea galaxies that University of Michigan astronomy researchers studied. Image Credit: Anne Jaskot Reionization [continue reading]

mrt 212013
 
An Almost Perfect Universe Revealed by Planck

  Acquired by ESA’s Planck space telescope, the most detailed map ever created of the cosmic microwave background – the relic radiation from the Big Bang – was released today revealing the existence of features that challenge the foundations of our current understanding of the Universe. The anisotropies of the cosmic microwave background (CMB) as [continue reading]

jan 282013
 
 When the Lights Go Out in a Galaxy

  The further away you look, the further back in time you see. Astronomers use this fact to study the evolution of the Universe by looking at nearby and more distant galaxies and comparing their features. Hubble is particularly well suited for this type of work because of its extremely high resolution and its position [continue reading]

dec 152012
 
Astronomers Discover Galaxies Near Cosmic Dawn

  A team of astronomers led by the California Institute of Technology (Caltech) has used NASA’s Hubble Space Telescope to discover seven of the most primitive and distant galaxies ever seen. This timeline shows the evolution of the Universe since the Big Bang. The new observations, labeled “Hubble 2012,” explored the deepest reaches of the [continue reading]

nov 132012
 
Quasars Unveil New Era in the Expansion History of the Universe

  BOSS, the Baryon Oscillation Spectroscopic Survey, is mapping a huge volume of space to measure the role of dark energy in the evolution of the Universe. BOSS is the largest program of the third Sloan Digital Sky Survey (SDSS-III) and has just announced the first major result of a new mapping technique, based on [continue reading]

nov 062012
 
Cosmic Crisis: Star Formation Decreases Drastically

  In the largest ever study of its kind, an international team of Portuguese, UK, Japanese, Italian and Dutch astronomers has established that the rate of formation of new stars in the Universe is now only 1/30th of its peak and that this decline is only set to continue. The team, led by David Sobral of [continue reading]