yes
Voyager 2 is the only spacecraft to visited Neptune.
Voyager 2 is the only spacecraft to have currently visited both.
No voyager 2 or two was the only spacecraft to visit Neptune.
Just one.
Voyager 2 is the only spacecraft to have visited Neptune, reaching it on August 25, 1989.
NASAS voyonger 2 was the first to visit neptune
None. The first spacecraft, Sputnik 1, didn't get into space until 1957. Voyager 2 did a fly-by of Neptune in 1989.
Yes, the Voyager 2 probe visited all four gas giant planets; Jupiter, Saturn, Uranus and Neptune. It flew by Neptune in 1989.
The only spacecraft to have visited Neptune is the space probe Voyager 2, which flew by Neptune in August 1989.
Voyager 2 is the only spacecraft to currently visit Neptune, passing 3,000 miles from the planet on August 25, 1989.
Voyager 2 flew by Neptune in 1989, coming within 30,000km of the planet.
As of 2011, only one spacecraft has passed relatively close to Neptune. The Voyager 2 probe visited Neptune in 1989, having previously passed Jupiter, Saturn, and Uranus. Voyager 2 took the first close-up photos of the Neptunian moon Triton, and discovered five inner moons: Naiad, Thalassa, Despina, Galatea and Proteus.