SuperNova Early Warning System
The SuperNova Early Warning System (SNEWS) is a network of neutrino detectors designed to give early warning to astronomers in the event of a supernova in the Milky Way, our home galaxy, or in a nearby galaxy such as the Large Magellanic Cloud. SNEWS has been operating since 2005.
Source: Wikipedia — SuperNova Early Warning System (CC BY-SA 4.0)