yes
There are many planets in our solar system that have not been visited by a spacecraft. As of now, the planet Uranus has not been visited by any spacecraft.
yes
The first planet to be visited by spacecraft was Venus. The Soviet spacecraft Venera 1 was the first to fly by Venus in 1961, followed by flybys and landings by subsequent missions from various countries.
No, only a few unmanned spacecraft have visited Venus. A manned flyby mission was planned by the US in the 1970s following the successful moon landings of the Apollo program, but it was cancelled.
No. Never been visited by humans.
No, there have not been any space missions that have visited Uranus. The Voyager 2 spacecraft is the only spacecraft to have passed by Uranus, conducting a flyby in 1986. There are currently no upcoming missions planned to visit Uranus.
Humans, no. Unmanned spacecraft, yes.
No voyager 2 or two was the only spacecraft to visit Neptune.
yes venus was explored by a robotic spacecraft. one of the first to reach vicinity of another planet and returned data the u.s mariner 2in it's flyby of venus in 1962. since then venus has been a target of over 20 spacecraft.
April 2008 At present the only planet in our solar system that has not been visited (either by an orbiting spacecraft or flyby spacecraft) has been the recently planet downgraded body of Pluto. There is a mission currently in motion to visit this distant outpost.
Yes.
No. The space shuttle was designed for low-Earth orbit, not travel between planets. Currently there are no manned spacecraft capable of interplanetary travel. Venus is much too hot for people to survive there