For one, Triton is big. It's the seventh-largest moon in the solar system, and it's over 200 times bigger than all of the other moons of Neptune combined, which makes it really stick out.. Second ...

In terms of its surface, it has icy cryovolcanoes, making it one of four worlds in the Solar System ... Triton, Neptune's largest satellite, as imaged from the Voyager 2 spacecraft.

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 ...

Only about 40% of Triton’s surface was photographed in useful resolutions. “60% of this moon is terra incognita, which makes Triton the largest unmapped solid body in the Solar System,” says ...

The surface of Neptune's moon Triton is so cold, the ground is made of frozen nitrogen. See what it would be like for an astronaut living on Triton in this full infographic.

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.

Also, Neptune's interior remains opaque, with our best guess being that it differs from the other gas giants. However, a lack of data makes further speculation difficult. Triton, Neptune's moon ...

Chinese scientists propose 2033 Neptune orbiter mission Scientists are proposing China’s first ice giant mission, aiming to ...

“Triton is a geologically active world,” Dr. Hammel said. “When Voyager 2 flew by, it saw cryovolcanoes erupting. So there is a possibility that there are changes in the surface chemistry ...

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 ...