Secrets of an Earlier Universe Revealed by Red-Supergiant Supernova
An artist’s rendition of a red supergiant star transitioning into a Type II supernova, emitting a violent eruption of radiation and gas on its dying breath before collapsing and exploding. Credit: W. M. Keck Observatory/Adam MakarenkoDetailed telescope images help scientists learn more about the Universe two billion years after the <span class="glossaryLink" aria-describedby="tt" data-cmtooltip="<div class=glossaryItemTitle>Big Bang</div><div class=glossaryItemBody>The Big…