In November 2023, NASA’s James Webb Space Telescope captured an image of a huge cluster of galaxies called MACS J0138.0-2155. Using gravitational lensing, a phenomenon predicted by Albert Einstein, a distant galaxy called MRG-M0138 is distorted by the strong gravity of the galaxy cluster. This gravitational lensing warps and magnifies the distant galaxy and creates five separate images of MRG-M0138.

In 2019, astronomers revealed the discovery of a supernova within the galaxy MRG-M0138, as observed by NASA’s Hubble Space Telescope in 2016.

Upon examining images from the James Webb Space Telescope in 2023, another group of astronomers made an unexpected observation: a second supernova had occurred in the same galaxy seven years later.

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