Nothing man-made has left our solar system yet. The furthest thing is Voyager 1, which is now about 116AU away from Earth, around 10.8 billion miles - at the edge of our solar system.
It's Pioneer 10, launched in March 1972. Pioneer 10 first explored the asteroid belt, then moved on to Jupiter. After that, it explored other outer planets and eventually went outside of the solar system, thus becoming the first spacecraft to flay past Pluto.
The gravitational pull between earth and the spacecraft will become insignificant.
There are a few steps of a solar system project. You first have to study the solar system.
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.
The first planet in the solar system is Mercury
There has never been a man made object to leave the Solar System. There are however, two objects which may escape the influence of Sol and enter the interstellar medium. These objects are the Voyager 1 and Voyager 2 spacecraft. It is currently unknown which will leave the system first, as although Voyager 1 was launched first, peculiarities of the nature of the Solar System may mean that Voyager 2 breaks the heliosphere first.
because they are far away from our solar system
It's Pioneer 10, launched in March 1972. Pioneer 10 first explored the asteroid belt, then moved on to Jupiter. After that, it explored other outer planets and eventually went outside of the solar system, thus becoming the first spacecraft to flay past Pluto.
Pioneer 10 was the first spacecraft to venture to the edge of the solar system. Hope I could help! :) :)
a probe
The gravitational pull between earth and the spacecraft will become insignificant.
Depends "very" much on the definition of the boundary of the solar system, but it's possible Voyager I may well have.
Voyager 1.
Yes. Much of what we know about Uranus was learned during a pass by the Voyager 2 spacecraft in 1986 on its way to Neptune and after that, to leave the solar system completely.
Voyager I and II are pretty much on the edge of solar system.
Yes. It is never going to leave the 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).