Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

Astronomers found an interstellar "tunnel" - a cosmic channel that connects our solar system to distant stars, according to a ...

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 ...

Comet C/2025 R3 (PanSTARRS) might be the brightest comet of the year, scientists predict.

The comet, discovered in July 2025, originated far beyond our Solar System and is thought to be around 7 billion years old - even older than the Sun. View on euronews ...

New measurements of radio galaxies reveal that the solar system is racing through the universe at over three times the speed predicted by standard cosmology. Using highly sensitive data from multiple ...

Realising that our solar system isn’t like most others out there has helped astronomers rewrite the story of how it formed ...