 Reines had prepared for the possibility of measuring the distant events of a supernova explosion . Supernova explosions are rare , but Reines thought he might be lucky enough to see one in his lifetime , and be able to catch the neutrinos streaming from it in his specially @-@ designed detectors . During his wait for a supernova to explode , he put signs on some of his large neutrino detectors , calling them " Supernova Early Warning Systems " . In 1987 , neutrinos emitted from Supernova SN1987A were detected by the Irvine – Michigan – Brookhaven ( IMB ) Collaboration , which used an 8 @,@ 000 ton Cherenkov detector located in a salt mine near Cleveland . Normally , the detectors recorded only a few background events each day . The supernova registered 19 events in just ten seconds . This discovery is regarded as inaugurating the field of neutrino astronomy . 
 Reines <a href='been_done' title='1'><mark>had</mark></a> prepared for the possibility of measuring the distant events of a supernova explosion . Supernova explosions <a href='drop_aux' title='2'><mark>are</mark></a>rare , but Reines thought he might be lucky enough to see one in his lifetime , and be able to catch the neutrinos streaming from it in his specially @-@ designed detectors . During his wait for a supernova to explode , he put signs on some of his large neutrino detectors , calling them " Supernova Early Warning Systems " . In 1987 , neutrinos emitted from Supernova SN1987A <a href='uninflect' title='3'><mark>were</mark></a> detected by the Irvine – Michigan – Brookhaven ( IMB ) Collaboration , which used an 8 @,@ 000 ton Cherenkov detector located in a salt mine near Cleveland . Normally , the detectors<a href='been_done' title='4'><mark></mark></a> recorded only a few background events each day . The supernova registered 19 events in just ten seconds . This discovery is regarded as inaugurating the field of neutrino astronomy . 
Reines done prepared for da possibility of measuring the distant events of a supernova explosion . Supernova explosions rare , but Reines thought he might be lucky enough to see one in his lifetime , and be able to catch tdaneutrinos streaming from it in his specially @-@ designed detectors . durin his wait for a supernova to explode , he put signs on sum of his large neutrino detectors , calling em " Supernova Early Warning Systems " . In 1987 , neutrinos emitted from Supernova SN1987A was detected by the Irvine – Michigan – Brookhaven ( IMB ) Collaboration , which used an 8 @,@ 000 ton Cherenkov detector located in a salt mines near Cleveland . Normally , the detectors done recorded only a few background events each day . The supernova registered 19 events in just ten seconds . dis discovery is regarded as inaugurating thdaield of neutrino astronomy .