It's not hard to believe that we could make self replicating drones in the next 100 years that go from system to system, make a few more, and continue. We've al

It's not hard to believe that we could make self replicating drones in the next 100 years that go from system to system, make a few more, and continue. We've already sent drones out of our solar system. They don't have to go fast. They'd still visit every system in the known universe in a "relatively" small amount of time. (relative to the age of the known universe).