Lyman-alpha Map Close-up (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Zooming in on a slice of the BOSS map shows areas with more (red) and less (blue) intergalactic gas, as revealed by correlations of the Lyman-alpha forest data from the spectra of thousands of quasars. A distance of one billion light years is indicated by the scale bar. Credit (Anže Slosar and BOSS Lyman-alpha cosmology working group Usage Restrictions with credit as given License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.