Hypergiant stars only have a lifetime of a few million years, so it’s not surprising that some were exploding 13 billion years ago.
Can you tell me how long it takes to form a mega-star? I believe these can be about 20 times the mass of our sun. I'm thinking that gathering much a vast quantity of material would take a while -- but maybe it all comes together in just a few million years? And then burns up in a few million years? Are these massive hyperstars just little blinks in the age of the universe?