Assertion: supernova's light | /r/HasProperty | detected on earth
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text: At 7 h 35 m 35 s on February 23, two hours before optical light was detected on earth, the walls of the Kamioka detector registered that 12 neutrinos had smashed into the detector's water pool and that they had penetrated the Earth from the direction of the LMC; six seconds later, 8 more hit the Morton mine.