A passing star, or a stellar flyby, with the potential to pull Neptune out of its orbit by just 0.1%, could mean catastrophe for the entire solar system. But don’t worry — it won’t happen in ...

Astronomers have made an extraordinary discovery at the outer edge of our solar system—a strange space rock that dances in ...

Researchers have shared a radical new idea for how to put a spacecraft in orbit around Neptune: Use the thin atmosphere of Triton, Neptune's largest moon, to capture it.

The study shows that even an 0.1 percent change to Neptune’s orbit could completely destabilize our solar system. Luckily, it won’t happen in our lifetime.

Discovered in 1846, Triton is the only known large moon in the Solar System with a retrograde orbit, traveling in the opposite direction to the planet’s rotation. This fact indicates that ...

And azimuthal libration ensures Pluto never crosses Neptune’s orbit within 90° of the ice giant. These properties are a consequence of a so-called orbital resonance between the two worlds.

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 ...

It is 14 miles wide and appears to be in a 9-year orbit around Neptune. The fainter moon is named S/2021 N1 and it is about 8.6 miles wide. It circles the planet once every 27 years.

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 ...