Voyager 2 completed its 'Grand Tour' of our solar system's outermost planets. It took this image of Neptune and its moon Triton, one of 77 composite photographs that appeared in our 2016 exhibition, ...

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

Other planets either have multiple moons ... interaction has produced a binary capture, with Neptunian moon Triton. Triton orbits Neptune in the opposite direction from the rest of Neptune's ...

The ringed gas giant Saturn has officially replaced Jupiter as the planet in our solar system with the most moons. The ...

The International Astronomical Union’s Minor Planet Center has announced the discovery of three previously unknown moons of Uranus and Neptune. The latest addition brings Uranus's total moon ...