In 1987 a star exploded in a nearby galaxy, and detectors deep underground caught the burst of neutrinos roughly three hours before any telescope on Earth saw the light arrive. The star was Sanduleak -69 202, a blue supergiant in the Large Magellanic Cloud, about 168,000 light years away. The event was logged as SN [...] The post In 1987 a star exploded in a nearby galaxy, and detectors deep underground caught the burst of neutrinos roughly three hours before any telescope on Earth saw the light