Four decades years after their discovery, the 13 mysterious rings around Uranus surprised astronomers again this summer. In June, new images captured their warm glow for the first time.

Four decades years after their discovery, the 13 mysterious rings around Uranus surprised astronomers again this summer. In June, new images captured their warm glow for the first time.

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.

The images are a massive step up from the Hubble Space Telescope's attempt, which can barely make out one faint ring around Uranus. The newly enhanced image shows details of the planet's seasonal ...