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 ...

Neptune has 14 known moons. With the exception of Triton, all of Neptune's moons are very small, and they come in two general flavors: regular and irregular. The regular ones orbit close to the ...

Triton isn’t just any moon – it’s one of the most mysterious objects in the entire solar system. In this video, we explore what makes Neptune’s largest moon so strange, from its backward ...

Researchers use the Subaru Telescope in Hawaii to find a small object on the outer edge of the Solar System. Nicknamed ...

Neptune is called an “ice giant” because it’s mostly made of a thick, slushy mix of water, methane, and ammonia, which ...

In as little as 10 million years—a brief interlude in the solar system’s 4½-billion-year history—Triton could begin its final plunge toward Neptune’s surface. Only one event could prevent ...

The Webb telescope also captured seven of the 14 known moons in the Neptune system. Most prominent in this image is Triton, above Neptune, with bright diffraction spikes.

Another striking feature in the new JWST image are Neptune's moons. Seven of the planet's 14 known moons are on display here, including its largest, Triton — seen as the severely spiky point of ...

NASA released an image of the planet Wednesday that it said is the clearest view of Neptune’s rings in 30 years, and put the planet in a new light.

Sometimes, astronomy is like a forensic investigation: We can't just rerun the past, so we have to study clues to figure out what happened. And the outer solar system contains one striking crime scene ...