Answer: Bacteria
Notes: Researchers found that Deinococcus radiodurans can survive extremely high pressures of 14,000–24,000 Earth atmospheres, similar to pressures during planetary impacts. It is a bacterium famous for its extreme resistance to ionizing radiation, earning the nickname “Conan the Bacterium.” The organism is gram-positive, non-motile, and reddish in colour. It was first discovered in 1956 in radiation-treated canned meat. It can survive radiation doses thousands of times higher than those fatal to humans, making it one of the most radiation-resistant organisms on Earth.
