A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

What if our understanding of Uranus and Neptune's compositions have been wrong, specifically regarding their classifications ...

A mysterious space object named 2023 KQ14, nicknamed “Ammonite,” challenges theories about the mysterious and possible Planet ...

The planet Neptune has a large dark spot "with an unexpected smaller bright spot adjacent to it," inveru observations using ...

What can sub-Neptunes, exoplanets whose sizes are between Earth and Neptune, and which are between the known for their water-rich compositions, teach astronomers about both where and how to find life ...

One of the most notable properties of the giant planets in our solar system—Jupiter, Saturn, Uranus and Neptune—are the ...

TOI-421 b is a scorching hot sub-Neptune planet with a mass around 7 times that of Earth that orbits its star at a distance equivalent to around 6% of the distance between our planet and the sun.

A recent study introduces a potential new candidate, dubbed Planet Y, inferred from the tilted orbits of distant objects in the Kuiper Belt.

At 4 PM EDT, the Moon passed 4° north of Saturn, followed by a passage 3° north of Neptune at 6 PM EDT. Saturn (magnitude 0.6), visible to the naked eye, and Neptune (magnitude 7.7), requiring optical ...

A new study rules out the existence of global oceans of water on Neptune-like planets such as K2-18b, finding their water ...

Pluto's unusual eccentricity and tilt is likely due to its interactions with neighboring Neptune and other giant planets, ...

Sean is scared of flying out to visit Neptune./The kids celebrate Jet's Earthday birthday. Sean's nervousness about flying out to visit the remote Neptune is soothed by Jet's suggestion - an ...