There is no definitive "best" theory for explaining the radiation detected in space, as scientific understanding is constantly evolving and different theories may be applicable to different aspects of space radiation. However, currently, the most widely accepted explanation for the radiation detected in space is the Big Bang Theory. This theory posits that the universe originated from a hot, dense, and highly energetic state approximately 13.8 billion years ago. During the initial moments of the Big Bang, all the matter and energy in the universe was concentrated in a singularity, then a rapid expansion occurred that caused the universe to cool down and expand. As the universe expanded, it also cooled, and the high-energy radiation present in the early universe gradually transformed into lower-energy forms, such as cosmic microwave background radiation. This theory can successfully explain the observed radiation patterns and the overall structure of the universe. However, it is worth mentioning that scientific research and investigations are ongoing, and new theories may emerge in the future as our knowledge expands.
