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.
No, astronomers have not physically gone out of the solar system. They study space and celestial bodies using telescopes and spacecraft like Voyager 1, which has reached interstellar space but is still within the boundaries of our solar system. Astronomers rely on these tools to explore the universe beyond our solar system.
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
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.
NASA has sent spacecraft to all eight planets in our solar system, including numerous missions to Mars. They have also launched missions to study asteroids, comets, and the Sun. NASA's Voyager 1 spacecraft has even left our solar system and is now in interstellar space.
The Voyager 1 spacecraft is a 722-kilogram (1,592 lb) space probe launched by NASA on September 5, 1977, to study the outer Solar System and eventually interstellar space. Operating for 33 years, 11 months and 12 days as of today (17 August 2011), the spacecraft receives routine commands and transmits data back to the Deep Space Network. It will be the first probe to leave the Solar System and is the farthest man made object from Earth.The two Voyager satellites have left the solar system and passed the "heliopause", the boundary layer between the solar system and deep space.V1 Launch Date: 1977-09-05 12:56:00 UTCV2 Launch Date: 1977-08-20 14:29:00 UTC
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.