This reminds me of the "Ascension" premise behind Ian M. Banks' last book in the culture series: https://en.wikipedia.org/wiki/The_Hydrogen_Sonata https://en.wi

This reminds me of the "Ascension" premise behind Ian M. Banks' last book in the culture series: https://en.wikipedia.org/wiki/The_Hydrogen_Sonata https://en.wikipedia.org/wiki/The_Hydrogen_Sonata