> It may be possible for a swarm of ultralight nanocrafts—propelled by a laser and traveling at a third of the speed of light—to make it to a black hole within about a century.
> For a spacecraft like that to reach a black hole in such a relatively short time, there would have to be a black hole 20-25 light-years from Earth, and none so close have been observed yet.
> For a spacecraft like that to reach a black hole in such a relatively short time, there would have to be a black hole 20-25 light-years from Earth, and none so close have been observed yet.