I wonder in how many years it will take for humans to develop the technology it will take to travel to other planets. visit other galaxies? reach the speed of light? etc. Maybe hundreds of years from now. Maybe we'll never be able to do that. It's always certainly interesting to think about how far technology has come the last one hundred years. Even the last fifty. And how far technology will go.
I'd venture that if we're still around in 1 billion years we'll have figured all that out