The Universe’s biggest explosions since the Big Bang – and we just discovered them

The Universe’s biggest explosions since the Big Bang – and we just discovered them

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Get the key facts about this explosive story in our quick, 1-minute read:

  • Biggest bangs: Astrophysicists at the University of Hawaiʻi's Institute for Astronomy (IfA) have uncovered the most energetic explosions observed since the Big Bang.
  • What are ENTs? Extreme nuclear transients (ENTs) they occur when massive stars – at least three times the mass of the Sun – get shredded by the tidal forces of supermassive black holes
  • Mind-blowing energy release: One ENT, dubbed Gaia18cdj, emitted over 25 times more energy than the brightest known supernovae, radiating the equivalent of 100 Suns in a single year
  • Orders of magnitude brighter: ENTs are around 10 times more luminous than typical tidal disruption events and can stay bright for year – far longer than supernovae
  • Extremely rare flashes: These events are exceptionally uncommon, about 10 million times less frequent than supernovae, making each detection a significant observational achievement
  • Why they matter: ENTs offer a new window into studying supermassive black holes in distant galaxies, especially during a formative epoch when galaxies and black holes were more active
  • The hunt continues: Next-generation observatories like the Vera C. Rubin Observatory and NASA’s Roman Space Telescope will enhance our ability to find and study these rare cosmic flash-bangs

Black hole explosion. Credit: Baac3nes / Getty Images
Credit: Baac3nes / Getty Images

Get all the facts in our full coverage of the biggest explosions discovered since the Big Bang

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