Maybe not in this solar system, but in others they're finding, it's a distinct possibility.
There are 100 billion stars in the Milky Way galaxy alone. Scientists are discovering that nearly all of them have planetary systems of multiple worlds. That puts the possible number of planets in just this galaxy in the hundreds of billions.
The odds dictate that there will be thousands, if not hundreds of thousands of planets, that are capable of supporting earth-like lifeforms in the Milky Way alone. Now start multiplying that by the hundreds of billions of other galaxies.
It may be beyond our imagination, or our understanding of physics today, to see how mankind will ever travel to such places, but it's coming. Perhaps not in our lifetimes, but it'll happen.
We are never going to travel faster than the speed of light. Our understanding of physics has nothing to do with it: it's a limitation based on the geometry of the universe.
Even if there are other planets with breathable air on them, we aren’t going to get to them unless we can create a “Jump to lightspeed” transportation system.
We can’t even get our subways to work in DC.
It’s gonna be a long time before we go out into real space and even if by some chance we reached a planet after many generations of travel, I doubt that anyone will know about it for many years.
Meanwhile back on earth, “Houston, we have problems” and they need to be solved now.