This approximate natural-color image shows Saturn, its rings ... gaseous giant. Voyager 2 got within 50,600 miles of Uranus during its flyby. This photograph of Neptune was taken at a range ...

The perception of Neptune as much darker and bluer than Uranus was "cemented" when pictures were sent back by the Voyager 2 probe after it flew by the two planets in 1986 and 1989, said The Times.

Humanity’s first close-up images from Neptune came 34 years ago from NASA’s Voyager 2 spacecraft. The images shows bright cirrus clouds high in its atmosphere above most of its methane.

NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer planets of our solar system.

Since then, the planet has only been visited once by spacecraft when, in 1989, Voyager 2 completed its 'Grand Tour' of our solar system's outermost planets. It took this image of Neptune and its moon ...