Researchers have made a groundbreaking discovery about tardigrades' radiation resilience. Scientists exposed Hypsibius henanensis to high doses of gamma rays and found that these tiny creatures can survive huge amounts of ionizing radiation by repairing damaged DNA quickly and efficiently. Additionally, they also discovered two other mechanisms that help them withstand radiation: turbocharged DNA repair driven by the protein TRID1 and the production of antioxidant betalains.

Source: https://www.popsci.com/science/tardigrade-radiation-resilience/