The answer is mars.
Mars has constantly been visited by spacecrafts. The first spacecraft to visit Mars was the Mariner 4. After that Mars has been visited by numerous spacecrafts like: Mars Pathfinder, Mars Global Surveyor, Mars Odyssey, Mars Express and the Mars 2 which was the first spacecraft to land on Mars.
Depends on whether you say Pluto is a planet or not. If you say it isn't, then there are no planets that haven't been visited by a spacecraft. If you say it is, then there is one that hasn't been visited yet, but one is on the way.
The only planet astronauts have visited is earth. The moon, a satellite, has also been visited.
The only planet humans have ever been on is Earth.
No manned missions have gone farther away than the moon. If you mean space probes or satellites, I think three
Yes. We have landed multiple probes and rovers on Mars.
Mars has constantly been visited by spacecrafts. The first spacecraft to visit Mars was the Mariner 4. After that Mars has been visited by numerous spacecrafts like: Mars Pathfinder, Mars Global Surveyor, Mars Odyssey, Mars Express and the Mars 2 which was the first spacecraft to land on Mars.
two
saturn has only been visited 4 times by spacecrafts
Messenger
Yes.
Depends on whether you say Pluto is a planet or not. If you say it isn't, then there are no planets that haven't been visited by a spacecraft. If you say it is, then there is one that hasn't been visited yet, but one is on the way.
Terrestrial planets not landed on - Venus.
earth
They found planet jupiter.
The only planet astronauts have visited is earth. The moon, a satellite, has also been visited.
All of the planets in the Solar System have been visited by machines except for the planet Pluto. There was a machine that was launched in 2004 for a flyby to Pluto in 2014.