Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

A new program has discovered chaos in a nearby planetary system, which could explain the existence of a phenomenon ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered two new exoplanets around a young ...

Recent observations of the Kuiper Belt have revealed anomalies that suggest the presence of an undiscovered Neptune-sized ...

Astronomers are hunting for evidence of a mysterious ninth planet beyond Neptune. This documentary uncovers the clues, the science, and what discovery could mean for our solar system.

Mathematicians calculated where the planet might be based on its effects on Uranus, and astronomers searched for less than an hour before they found the Neptune. That was in 1846.

An exoplanet orbiting a dwarf star 124 light-years from Earth made headlines around the world in April 2025. Researchers at ...

Neptune, long believed to be dark blue, is actually very pale like Uranus, scientists say. They used modern telescopes to re-assess artificially enhanced images taken by NASA's Voyager 2 probe. We can ...

In the vast and boundless universe, countless astonishing mysteries are hidden. Today, let us turn our gaze to the mysterious ...

Artist’s concept of a Neptune-sized planet, left, around a blue, A-type star. UC Berkeley astronomers have discovered a hard-to-find gas giant around one of these bright, but short-lived, stars, right ...

The New Horizons spacecraft is perhaps most famous for revealing the icy world Pluto in 2015, flying by the distant dwarf planet and sending back stunning imagery of a dynamic world. But the ...