Across the Star Wars Universe, you’ll find several habitable worlds that characters live on. Of course, they are not all suitable for “human” life. However, that does not mean that life could not live there. The real struggle for scientists today is that, while we all know it is possible other life can be found, we have yet to find it. The United States is trying to prepare for that possibility though. Currently, there are a few universities with “space contracts” from NASA.
In each one, they tend to study different but similar stuff. One concept currently in play for researchers at Arizona State University is what we would do if life was discovered. Where would we study this life, even if it was microbial? Others study potentially habitable worlds. NASA released a list of around 24 planets they consider to be the most habitable of any planet, outside our own of course. This proves Lucas was onto something when he brought up these habitable worlds in Star Wars.