In 2018, the galaxy 1ES 1927+654 exhibited an unexpected optical brightening, signaling the activation of its supermassive black hole after a long period of inactivity.
The activity of supermassive black holes can last for incredible durations, often tens of millions to billions of years, influencing their host galaxies significantly.
Supermassive black holes typically remain dormant, only interacting with nearby matter occasionally, leading to bursts of energy detectable from vast distances across the Universe.
The observation of a supermassive black hole transitioning from a dormant state to an active one helps enhance our understanding of black hole behavior and cosmic evolution.
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