Neptune is the keeper of the deep: The last known major planet from the Sun, the god of the boundless sea beyond the inner solar system that marks the shore of the black depths of interstellar space.

NASA released new images of Neptune on Wednesday that revealed the solar system’s eighth planet from the sun and its rings in a new light. The photographs, from the James Webb Space Telescope, show ...

Neptune’s supersonic winds and icy storms revealed a planet so extreme that it forever changed our picture of the solar system. The discovery of Neptune in 1846 was not just the triumph of mathematics ...

A new computational model suggests that Uranus' and Neptune's cores may be less icy than their "ice giant" nickname suggests.

Researchers are investigating an alien version of water inside the strange, icy interiors of Uranus and Neptune. In a new study, scientists have devised a theoretical computer model and used it to ...