Yeah, not sure where the other figure came from. There is literally a project to build unmanned craft to visit Proxima Centauri sometime in the next 50 years or

Yeah, not sure where the other figure came from. There is literally a project to build unmanned craft to visit Proxima Centauri sometime in the next 50 years or so: https://en.wikipedia.org/wiki/Breakthrough_Starshot https://en.wikipedia.org/wiki/Breakthrough_Starshot