<ul><li>The black hole in the galaxy SDSS1335+0728, which had been dormant for decades, is now showing quasi-periodic eruptions (QPEs) of powerful X-rays at regular intervals.</li><li>These QPEs are up to 100 times more powerful than normal and lasting 10 times longer. They are providing astronomers with an unprecedented view of a black hole that seems to be awakening from dormancy.</li><li>The observations of the black hole's QPEs are challenging current understanding of black hole behavior and leading researchers to reconsider how they behave.</li><li>Possible explanations for these unusual QPEs include disruptions in the accretion disk by small celestial objects or the influence of gravitational waves.</li></ul>

Newly 'awakened' black hole is releasing 100 times more energy than scientists have ever seen before

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