AGN radiation may support life in safe regions

A recent study published in The Astrophysical Journal suggests that radiation from active galactic nuclei (AGN), typically harmful, can actually support life under certain conditions. Researchers found that if a planet has an oxygen-rich atmosphere, AGN radiation can enhance the ozone layer, protecting life. The study simulated the effects of AGN radiation on Earth-like planets. It showed that as oxygen levels rise, the radiation can trigger chemical reactions that increase ozone, which shields the planet from harmful radiation. This process could allow life to thrive. The researchers noted that the distance from a black hole significantly affects the potential for life. In galaxies with tightly clustered stars near an AGN, conditions would be lethal, while more spread-out galaxies, like the Milky Way, offer a safer environment for life to develop.