From the outskirts of the sun’s orbit, Neptune bathes in only 0.1 percent of the intensity of sunlight that we get on Earth. Yet despite the distance between them, the sun still holds sway over ...

Beyond Neptune, a celestial object puzzles astronomers with its synchronized motion with the giant planet. Its inclined orbit ...

A lone body, making one passage around the Sun for every ten by Neptune, is rewriting the rules of planetary dynamics in the ...

Over the past few years, the white clouds that usually shroud Neptune’s surface have disappeared, and it may be because of changes in the sun’s activity over its 11-year cycle ...

An artist's illustration of Neptune, with faint streaks of wispy white clouds. (Image credit: Getty Images) All of Neptune's clouds have vanished, and scientists think the sun is to blame.

The solar system’s most distant planet sits 1.1° due north of Saturn, placing them together in a single telescopic field of view all night.

This object is the first confirmed body that orbits the sun once for every ten orbits Neptune completes.

Astronomers have discovered a bizarre object in the outer solar system, 2020 VN40, that dances to Neptune’s gravitational beat in a never-before-seen rhythm. It’s the first of its kind, orbiting the ...

Neptune cloud coverage as seen by the Keck Observatory. The solar cycle is a period when the Sun's magnetic field flips every 11 years. This causes levels of solar radiation to fluctuate.

The astronomers then compared that data to the timeline of the Sun’s solar cycle, an 11-year period in which the Sun’s solar activity slowly ramps up until it eventually peaks.