At http://phys.org/print358742537.html … some supernovae can't be explained by consensus cosmology. They are an astronomical mystery. As such they are inclined to attract some peculiar theories and in this one, a 'binary black hole sling shot' is to blame according to a study just published in the Monthly Notices of the Royal Astronomical Society. The problem actually is that astronomers can't see anything where the explosion of light took place – no trace of star formation, no cluster of old stars, nothing much at all. It is suggested these odd exploding stars were kicked out of their galaxies at very high speeds, millions of years before they exploded.
It all sounds very reasonable when you read what the study author says – but what is missing?