Are you Ready to see a Supernova Explosion in Sky? Nasa Shared Amazing Pictures of an Explosion
Three mirror images of Supernova Requiem were spotted by Hubble scattered in an arc-like pattern across the cluster. Each image shows the supernova’s light at different times after the explosive event, and a fourth copy is likely to show up in 2037.
You can think about the supernova’s different light paths like this: Several trains leave a station at the same time, all traveling at the same speed and bound for the same location. Each train, however, takes a different route, and the distance for each route is not the same. Because the trains travel over different track lengths across different terrain, they do not arrive at their destination at the same time.