Scientists have fiercely debated the existence of ‘Planet 9’ for a decade. Some say evidence is piling up
After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...
Asteroid grains shed light on the outer solar system's origins
Tiny grains from a distant asteroid are revealing clues to the magnetic forces that shaped the far reaches of the solar ...
Is there a hidden planet in our solar system? Astronomers say the moment of truth is near
After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...