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Hubble spots first-ever supernova explosion
The Hubble Space Telescope has captured the image of the first-ever predicted supernova explosion that offers a unique opportunity for astronomers to test how mass - especially that of mysterious dark matter - is distributed within a galaxy cluster.
Washington: The Hubble Space Telescope has captured the image of the first-ever predicted supernova explosion that offers a unique opportunity for astronomers to test how mass - especially that of mysterious dark matter - is distributed within a galaxy cluster.
Many stars end their lives with a bang, but only a few of these stellar explosions have been caught in the act. Spotting them successfully has been down to pure luck - until now. On December 11, astronomers not only imaged a supernova in action, but saw it when and where they had predicted it would be.
The supernova, nicknamed Refsdal, has been spotted in the galaxy cluster MACS J1149.5+2223. While the light from the cluster has taken about five billion years to reach us, the supernova itself exploded much earlier, nearly 10 billion years ago.
As the matter in the cluster - both dark and visible - is distributed unevenly, the light creating each of these images takes a different path with a different length.
Therefore, the images of the host galaxy of the supernova are visible at different times.
