# The Oldest Documented Supernova Had One Job: Show Magnetic Order. It Didn't. - slug: the-oldest-documented-supernova-had-one-job-show-magnetic-order-it-didnt - date: 2026-03-27 - category: Space & Aerospace NASA's Imaging X-ray Polarimetry Explorer spent the equivalent of nine days staring at the oldest known supernova remnant. ---