MIT researchers analyzed precious samples from the asteroid Ryugu, delivered to Earth by Japan’s Hayabusa2 mission. They looked for clues of an ancient magnetic field.

Tiny grains from asteroid Ryugu are revealing clues to the magnetic forces that shaped the far reaches of the solar system over 4.6 billion years ago. The findings suggest the distal solar system ...

Astronomers are investigating the possibility of a hidden ninth planet beyond Neptune, which could explain unusual orbital patterns in the Kuiper Belt.

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...