Neptune has a complicated life story, and its moon Nereid might be the only one left standing from the planet’s ...

A study suggests that the ice giant's largest moon, Triton, made a dramatic entrance to the Neptunian system long ago, ...

Researchers at Carnegie Institution for Science and Nanjing University published a study predicting that carbon and hydrogen ...

Neptune’s far-flung moon Nereid may be the last of the plane t ’s original companions that managed to survive a cosmic crash, ...

Nereid was discovered by Dutch astronomer Gerard Kuiper, who named the moon after the sea nymphs in Greek mythology ...

Neptune's mysterious, far-flung moon Nereid may be the last of the planet's original companions. Scientists at the California ...

Neptune’s moons have long provided evidence of a cataclysm four billion years ago. A new study suggests one moon may have ...

Nereid, Neptune’s third-largest moon, could be the only intact survivor from an ancient set of moons destroyed early in the ...

Neptune’s oddball moon Nereid may be the sole remnant of an earlier system, formed near the planet rather than being pulled ...

Voyager 2 launched in 1977 during a rare planetary alignment that happens only once every 176 years. Using gravity assists ...

The image on the cover of the March 3, 1986 issue shows a thin crescent of Uranus, visible as Voyager 2 passed behind the planet at a distance of 600,000 mi. on January 25, 1986. The pale blue-green ...