Our ‘Glowing’ Universe: “An Eye-Opening Surprise”
Weekend Fwature
“This is a great discovery!” said ESO team member Themiya Nanayakkara in fall of 2018 about the discovery that almost all of the sky is invisibly glowing with Lyman-alpha emission from the early Universe. “Next time you look at the moonless night sky and see the stars, imagine the unseen glow of hydrogen: the first building block of the universe, illuminating the whole night sky.”