REFSDAL
The Star That Exploded Twice: How Gravitational Lensing Made a Supernova ReappearA distant supernova appeared to explode twice, baffling astronomers. This cosmic event was explained by Einstein's theory of general relati...- Hubble captures images of first-ever predicted supernovaThe supernova, nicknamed Refsdal, has been spotted in the galaxy cluster MACS J1149.5+2223.
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