Part 5/9:

For humanity’s continuation, leaving Earth and establishing colonies on celestial bodies such as Mars or the moons of Jupiter is essential. By spreading across the solar system, we would increase our chances of survival against catastrophic cosmic events, potentially lasting until our Sun reaches the end of its life in about 4.5 billion years.

However, we are also at risk from a more immediate threat: gamma-ray bursts from supernovae. Though rare, the likelihood that our solar system will face one in the upcoming 500 million years is significant. Such radiation would obliterate carbon-based life, including humans, if sufficiently close.