3,8 billion years ago is a long time ago
This did happen really long time ago, around 3,8 billion years ago. When it happened our one solar system was nothing more than a gas cloud and some alien imagination.
But the energy numbers from this explosions are mind boggling. What did happen when this did explode was no small thing and nothing anyone want to be a nearby when it exploded. I'm sure the afterglow is going to be interesting to monitor.