Cassiopeia A: The Ghost Supernova and the Cosmic Time Capsule
About this episode
A deep-dive into Cassiopeia A, the brightest extra-solar radio source, and a centuries-old explosion that went unnoticed in the 1600s. We explore how radio, X-ray, and light-echo observations stitched together the event, revealing an asymmetric Type I explosion and the creation of life’s building blocks—like phosphorus. It’s a cosmic detective story about how science rewrites history by listening across time and signals.
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