Grabby Aliens & The Fermi Paradox
Science & Futurism with Isaac Arthur
00:00
How Much Does a GC Mean?
A computer model of various origin planets of aliens randomly distributed at a given density. Each with a random expansion speed and duration, to see how likely we are to be the first in our region of space. From the model they typically expand to get to a million or so galaxies before running into neighboring expansion waves. In practice it would seem like what will actually matter for colonization will be if there's a maximum safe speed to travel between galaxies. A few thousand years of spaceship propulsion improvements to get from 1% of light speed ships up to 80% matters a lot on this scale.
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