I would like to think its very much possible.
Its just not possible as long as we continue to waste our resources on people who dont deserve it and on wasteful projects and studies.
If we struck the budget of ALL pork and waste we could build a starship in less than 10 years.
God only knows what kind of tech they are using right now, keep in mind the SR-71 was flying in the 50's and we didnt hear about it until the 80's.
We desperately need to start expanding our horizons and we need to do it fast before we deplete our natural resources due to over population.
You cant keep prolonging the human life span without expanding beyond the planet or we will all suffer.
78,000 people volunteered for a one way trip to Mars to start a colony.
We need to make this happen and very soon.