Man has made tremendous progress in the space technology as we see today. We have probes that have landed on planets like Mars or comets like Ceres. The Voyager 1 is a probe that has already exited the solar system and is in the Interstellar space(Interstellar medium is the medium that separates two stars and their systems. It is comprised mainly of hydrogen and Helium). It will continue to give Radio signals till 2025 as predicted by NASA.
However, man has not traveled as far as the machines have gone. We only get to see these planets or other objects in the form of images photographed by probes. How long will it take for us to be lucky to see it with our own eyes?
By far- The only outside Earth body that man has landed on is the Moon. Except for moon, Man has not landed on any other planet-comet-asteroid as such! NASA expects man to land on Mars by 2025!! If it takes us so long to develop a technology to reach Mars.. imagine how long will it take to reach Jupiter, Saturn and Neptune that are far far away! The question is- will it ever be possible? And we speak of interstellar travels!! Travelling from one planet systems to another planet system!
Well.. the only limitation is the distance. There is no such technology known that can help us travel such large distances in short time. Consider Pluto.. it is 7.5 billion km from Earth, traveling to Mars with now available technology may take us months! And traveling to Pluto may take years!!! SO will we ever exit our solar system!
The only option available with us is to take the help of Einsteins Theory! the theory that speaks about wormholes!!
Wormholes are the region in space-time that connects one point in space-time to another Through shortest possible path.