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.

While the Hubble Space Telescope might be most famous for its images of beautiful and far ... The planets Jupiter, Saturn, Uranus, and Neptune are different in many ways from Earth, as they ...