 Three views of the same supernova appear in this 2016 image on the left, taken by the Hubble Space Telescope. But they're gone in the 2019 image. The distant supernova named Requim is embedded in a giant galaxy cluster 4 billion light years away. The cluster gravitationally lends the light from the supernova located in a galaxy far behind it 10 billion light years away. It also split the supernova's light into multiple mirror images, highlighted by the white circles in the 2016 image. Based on the foreground galaxy's dark matter distribution, researchers predict that a reappearance of the same supernova will happen in 2037. The predicted location of that fourth image is highlighted by the yellow circle at the top left.