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

Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising to astronomers because most would predict the distant icy worlds to be ...

Pluto is a bit of a loner. The dwarf planet is no longer considered a regular planet; it does not orbit on the same plane as ...

From Newton’s falling apple to Einstein’s curved spacetime, our understanding of gravity has come a long way, yet this ...

The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get visitors, most often in the form of (usually harmless) asteroids. Some even ...

Objects like 3I/ATLAS could become the "seeds" of giant planets after being captured in the discs of dust and gas surrounding ...

Our planet has apparently had a small companion that went undetected for decades. What took so long to find it and why was it hidden?

Saturn is about to make its closest approach to Earth, and that means you might be able to see its rings — if you have a ...

Every year, the moon, Earth's reliable celestial companion for 4.5 billion years, is getting 1.5 inches away. The distance to ...

By 2015, NASA announced that Kepler had discovered its 1,000th exoplanet. 2016 was a banner year for exoplanet detections with nearly 1,500 in that year alone. The total number reached 5,000 in March ...

A study of Saturn's atmospheric structure using data from the James Webb Space Telescope (JWST) has revealed complex and mysterious features unseen before on any planet in our Solar System.

"The complexity of the exo-Neptunian landscape provides offers a unique window onto the processes involved in the formation ...