When you buy through links on our articles, Future and its syndication partners may earn a commission. The moon and Saturn will be visible in the eastern sky in the early hours of June 19, with dimmed ...

Neptune’s large moon Triton may have abandoned an earlier partner to arrive in its unusual orbit around Neptune. Triton is unique among all the large moons in the solar system because it orbits ...

Neptune stands stationary against the background stars of Pisces the Fish at 11 A.M. EDT. The solar system’s most distant planet is visible in the early-morning sky, now just 1° north of the planet ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to ...

Triton was discovered in 1846 by the British astronomer William Lassell, but much about Neptune’s largest moon still remains a mystery. A flyby by NASA's Voyager 2 spacecraft in 1989 offered a quick ...

On the heels of a year that brought a dazzling green comet, a rare sunrise eclipse, peak planet viewing, an interstellar ...