Astronomers are closing in on what looks like a colossal missing piece of the Solar System, a giant planet that appears to ...

Scientists say studying objects like Ammonite, despite their immense distance, offers valuable insight into the solar system's formation and early evolution.

Astronomers have noticed something strange happening at the outer edge of our solar system: distant objects are moving in ...

Add Yahoo as a preferred source to see more of our stories on Google. Digital art of distant planet - Dottedhippo/Getty Images On August 24, 2006, our solar system lost a planet. It wasn't by ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration showing Planet Nine, a hypothetical, undiscovered planet in our solar system. New research now suggests the ...

Astronomers have spent the past decade cataloguing thousands of planets beyond the solar system, many of them falling into a ...

Is there a massive undiscovered planet on the outer reaches of the Solar System? The idea has been around since before the discovery of Pluto in the 1930s. Labelled as planet X, prominent astronomers ...

Auroras are not just on Earth. NASA has detected glowing northern and southern lights on Jupiter, Saturn, Mars and other ...

Based on their models, the UZH astrophysicists concluded that the interiors of Uranus and Neptune could have a wide range of ...

LONDON — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper's authors have ...