The newly-discovered radio galaxy, dubbed Alcyoneus, has a projected length of 16.3 million light-years (4.99 Mpc). This radio-infrared image shows the radio galaxy Alcyoneus. Image credit: Oei et al., arXiv: 2202.05427. “Most galactic bulges hold a supermassive black hole that grows by accreting gas, dust and stars from its surroundings,” said Leiden Observatory astronomer Martijn Oei and colleagues. “The black hole ejects a fraction of its...
