Whenever I think of Neptune, I think of this image: https://commons.wikimedia.org/wiki/File:Neptune_Full.jpg https://commons.wikimedia.org/wiki/File:Neptune_Fu

Whenever I think of Neptune, I think of this image: https://commons.wikimedia.org/wiki/File:Neptune_Full.jpg https://commons.wikimedia.org/wiki/File:Neptune_Full.jpg This was taken in 1989 by Voyager 2, now 33 years ago. Voyager 2 remains the only spacecraft to have visited either of the ice giant planets.