Astronomical find A medieval manuscript recently acquired by the Penn Libraries contains six working volvelles, discs of parchment and paper that demonstrate the science of astronomy. Astronomical find Penn Libraries has acquired a rare astronomical treatise dated 1481, with unique diagrams in the margins, and original discs of parchment that turn to demonstrate the movement of the sun, moon, and planets.
A long time ago, from an explosion far, far away A long time ago, from an explosion far, far away An international team of astronomers, including Penn researchers, has confirmed the discovery of the most distant supernova ever detected, a huge cosmic explosion that took place 10.5 billion years ago.
Astronomers reveal secrets of most distant supernova ever detected Astronomers reveal secrets of most distant supernova ever detected An international team of astronomers, including researchers from the University of Pennsylvania, has confirmed the discovery of the most distant supernova ever detected, a huge cosmic explosion that took place 10.5 billion years ago.