A mysterious new world may be hiding in the outer reaches of our solar system. According to arecent study published on arXiv ...

Neptune, the farthest planet from the Sun, has long been a subject of fascination for astronomers, especially due to its ...

Stargazers are excited as a rare planet parade is expected to happen this weekend bringing some of the main characters of our ...

Today in the history of astronomy, NASA announces our first view of the rings of Neptune.

Neptune is the fourth largest planet in the solar system, with a radius of 15,599.4 miles (24,622 kilometers) — the distance between its core and the surface.

Mark your calendar so you can catch Mercury, Venus, Jupiter, Saturn, Neptune and Uranus in the sky at the same time.

In terms of mass, if you add up all the satellites of Neptune, Triton composes 99.5% of the mass of everything orbiting Neptune: moons, moonlets, and rings all included.