Massive black hole 'waking up' in Virgo constellation

Paris (AFP) April 11, 2025
A massive black hole at the heart of a galaxy in the Virgo constellation is waking up, shooting out intense X-ray flares at regular intervals that have puzzled scientists, a study said Friday. Astronomers previously had little reason to pay any attention to galaxy SDSS1335+0728, which is 300 million light years from Earth. But in 2019, the galaxy suddenly started shining with a brightnes