Von Neumann probes will probably the easiest way of seeding the Galaxy, self replicating, inteligent probes, fired off to areas in the Galaxy, there they will establish themselves, and if technology permits, they may be able to produce humans in situ, then once it is established they build more Von Neumann probes and fire them off, eventually exponential growth would see the entire Galaxy colonized.
Humans themselves imo will never be able to travel to other solar systems, the easiest method by far would be to grow humans at the destination, then you don't need cumbersome radiation shielding (at least not in the sizes needed to protect the humans, all you'd need is a shield to protect any cargo/computer systems). You wouldn't need bulky environmental support or food production or oxygen recycling, you could develop the spaceship for speed and ease of construction, ignoring all the difficult manufacturing and equipment requirements to keep humans alive.
Have a read of the Manifold seies of books by Stephen Baxter (Time, Spacem Origin, Phase Space) they deal remarkably well with ideas behind human colonization of the Galaxy.
Humans themselves imo will never be able to travel to other solar systems, the easiest method by far would be to grow humans at the destination, then you don't need cumbersome radiation shielding (at least not in the sizes needed to protect the humans, all you'd need is a shield to protect any cargo/computer systems). You wouldn't need bulky environmental support or food production or oxygen recycling, you could develop the spaceship for speed and ease of construction, ignoring all the difficult manufacturing and equipment requirements to keep humans alive.
Have a read of the Manifold seies of books by Stephen Baxter (Time, Spacem Origin, Phase Space) they deal remarkably well with ideas behind human colonization of the Galaxy.
Last edited: