Explosion in space, the consensus view of supernova and novae in general – see https://phys.org/news/2023-06-average-space-explosion-baseline-array.html … the research was based on a telescope array, VLBA, and was conducted by a graduate that uncovered evidence showing the objects may have been erroneously typecast as simple explosions. Another way of saying the consensus theory has problems. They might be wrong.
The leading theory is that novas emit thermal energy when they explode. In contrast, the graduate researcher could not detect any thermal emissions coming from the nova at the centre of the study. The object in question became 10,000 times brighter in a single day. It took 100 days to fade back to its previous brightness.