I believe it will be possible because think about the technological advances we've made in the last 100 years. Even just preparing for that moon landing gave us some tech that helps us in our modern every day living.
I doubt it because it's a fairly pointless exercise. There are no planets within easy reach that have the resources to provide for our basic needs. I also think it inevitable that our planet will undergo a reboot long before we reach the stage where we can seriously consider colonizing other planets.
Unfortunately, I haven't got any interest in leaving the earth for another planet unless earth becomes inevitable in the future. Anything other than that, I will stay here on earth and explore all the places that I've never been to.
I would rather they spend all that money they are squandering on trying to reach other plants to improve situations here. You know everything is not OK here.