I might be wrong, but I don't think those are individual planets. Please correct me if I'm wrong, but all of those represent solar systems, and that means that

I might be wrong, but I don't think those are individual planets. Please correct me if I'm wrong, but all of those represent solar systems, and that means that each one has the possibility to have at least one planet orbiting it with conditions similar to Earth. Yes, it's a pipe dream, but 150 years ago, so was a metal vehicle (of weight ranging from 50 pounds to hundreds of tons) that can go 100 MPH by filling it up with oil/coal/hydrogen/corn juice/electricity, or bombs that can go to the other side of the planet and detonate with a force destructive enough to melt large cities instantly. Instant learning requires pretty abstract thinking but it's being done today. We're just beginning to under the basics of quantum physics, who knows what possibilities that field will open up. Nanobots and terminator style machines are pretty close to being reality. Artificial intelligence (and whatever awesome abilities come with that) is almost a reality. Our current and incomplete understanding of physics (and quantum physics) only SUGGEST that we absolutely can't jump between stars with ease, so it might not be 100% a pipe-dream.