A (probably) fictional story: neutrino detectors all over the world go off, seemingly signifying a nearby supernova. However, astronomers point their telescopes (and eyes) at the sky but see nothing new.
Triangulation reveals the neutrinos originated from {the center of the earth, the sun, the center of the Milky Way, the galactic disk obscured by gas and dust, the Large Magellanic Cloud (again), empty space}.
Theme is, something extremely energetic has happened, but we are unable to determine what it was. Is there anything else in science that would fit within this theme?
A supernova releases as neutrinos the mass-energy equivalent of 100 to 200 earth masses. (90% of 10^44 J)
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