They found that the atmosphere of Triton, despite having less than 1/70,000 the air pressure of Earth's atmosphere, could sufficiently slow a spacecraft and allow it to enter into a captured orbit ...

Triton, which is about 1,680 miles (2,700 kilometers) wide, has a unique property among large solar system moons: a retrograde orbit. [ Video: Fly By Neptune's Freezing Moon Triton ] ...

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 ...

Long ago, as it sank from a higher orbit, Triton passed close to Nereid. The smaller moon, buffeted by Triton’s more powerful gravity, may have been hurled into the elliptical orbit it now follows.

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 orbit and icy ...

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

Neptune’s largest moon, Triton, and the dwarf planet Pluto may have shared a common origin before being separated in the early solar system, an analysis of their composition suggests.

The outer solar system contains a striking crime scene with a big mystery: How did Neptune get a moon like Triton?