Lyman-alpha visualization (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption This artist’s rendering shows light from quasars passing through intergalactic clouds of hydrogen gas. Researchers can analyze the light to learn about distant cosmic structure. Credit NOIRLab/NSF/AURA/P. Marenfeld and DESI collaboration Usage Restrictions N/A License Original 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.