Using lasers and light sails small craft can be accelerated to a noticeable fraction of the speed of light. We will be sending entire civilizations of nanobots

Using lasers and light sails small craft can be accelerated to a noticeable fraction of the speed of light. We will be sending entire civilizations of nanobots, or at least small artificial organisms. At 5% of the speed of light, including travel, reproduction & relaunches, a civilization like that at the center of the galaxy will reach the rim in 100,000 years. At the nano level time effective massively expands. Activity at that scale operates with speeds many magnitudes faster than gargantuan Ent-like beings like us, can easily imagine. :) It isn’t a journey suitable for humans, and our position here is changing rapidly decade to decade. The galaxy was never going to belong to humans, but hopefully our progeny. — Then there is hope from physicists, that harnessing stellar level energy will allow faster than light warp travel. That would let beings cross the vast spaces between galaxies.