3 ms·
In the long term, with the distances in space, the former of the two probably isn't a single species, so the scenario isn't really "a multi-planet species", it'
by Marsymars 2y ago
In the long term, with the distances in space, the former of the two probably isn't a single species, so the scenario isn't really "a multi-planet species", it's "multiple single-planet species with a common ancestor".