Light From Cosmic Dawn

<p>U.S. National Science Foundation-supported observatories allow researchers to advance and expand humanity’s understanding of the early universe. Tobias Marriage, a professor at Johns Hopkins University, and Yunyang Li, a postdoctoral researcher at The University of Chicago, discuss how they used the NSF Cosmology Large Angular Scale Surveyor to see the cosmic microwave background, light from the beginning of the universe.</p>