Depending on you interpretation of Solar System [See related question] only four craft are/will beyond our Solar System
See related link for a pictorial of their positions.
Voyager I and II are pretty much on the edge of solar system.
Louis Armstrong (Sachmo) may have dreamt of walking on the moon but he never got there. His music has gone beyond the solar system on a digital recording on the Viking spacecraft!
The Voyager probe/spacecraft lauched in 1977,has gone beyond our solar system and is headed for the next closest one although most NASA scientists believe even if it arrives there undamaged it will not have enough power to transmit back to Earth to confirm its location/existance.
Both Voyager 1 and 2 have travelled through the solar system, I believe Voyager 1 is the only one which has left the solar system (or is in the process of).
No. Both voyager 1 and 2 are on their way out of our solar system and will eventually escape one day. They have gone well beyond the furthest planet Neptune, but the solar system extends out much further, with the sun have a gravitational effect on objects as far out as 50,000 astronomical units or so. The voyager space craft has got out as far as 116 astronomical units so far.
Voyagerhttp://en.wikipedia.org/wiki/Voyager_1 1
We know because astronaughts have gone to space and exploured around space and found out many more plantets beyond pluto.
i know, but maybe just maybe i don't want to tell you
Voyager One and Voager Two have both passed beyond the orbit of Pluto.
Spacecraft that will operate within the inner solar system are generally equipped with solar (photovoltaic) panels, which use sunlight to generate electric power. Those that will spend most of their time in the outer solar system, or leave the solar system entirely, will carry nuclear reactors to generate electric power. The electric power runs the instruments, computers, and communications on the spacecraft. But in most cases, electric power doesn't provide the forces needed for navigation. Mid-course adjustments of attitude and trajectory are made the old- fashioned way ... with rocket engines, or thrusters that poof out little puffs of gas. Both of those run on fuel that's carried aboard the spacecraft at launch. When it's gone, it's gone.
Right now, the farthest spacecraft is the Voyagers which were launched in the 70's. But, they are only just out of our solar system. The universe as we know right now, is infinite. But, Hubble can see things that are unbelievable distances away.
Our Solar System has only one star, the Sun, and the last time I checked it was still there. It has not gone "nova". See related for more information on novae.