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Telescopes detect 'biggest explosion since Big Bang' - BBC News
March 1, 2020 at 2:02:22 AM GMT+1 * - permalink -The blast in the Ophiuchus galaxy cluster left a cavity 15 times bigger than our Milky Way galaxy.
- https://www.bbc.com/news/science-environment-51669384?ns_source=facebook&ns_mchannel=social&ocid=socialflow_facebook&ns_campaign=bbcnews
