For many of us, the idea of a solar system with just eight planets is a fundamental concept in science. However, since Pluto was reclassified as a dwarf planet in 2006, Neptune has stood as the last ...

For the first time in history, we now have real, high-resolution images of Neptune that go beyond artist impressions and telescope visuals. Captured by advanced space telescopes and spacecraft ...

The hypothetical Planet Nine is imagined as an ice giant in this artist’s conception. Neptune’s orbit is shown as the ellipse around the distant Sun (upper right).

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

If Planet Nine is real, “my instant reaction might be relief,” Brown says. He admits that should he not be the one to first cast eyes on it, he would feel an initial gut punch of frustration ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...