Escaping The Galaxy
Science & Futurism with Isaac Arthur
00:00
The Future of Civilizations
20% of light speed as the ships travel time is on the extreme high end of what you might be able to do with a fusion drive, CR fusion propulsion episode with details. However let's assume these were generation ships and ones that could stop occasionally maybe you can zigzag through various red giants every light century or so. That is likely to mean a dozen generations of war between stops so it is almost a new civilization for every leg of the journey. At the end of the day you could clone your whole civilization back up from a single person in an archive of genetic and historical data. See your episode on sleepless ships and seed ships for how those ships work.
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