Using a NASA supercomputer to run models, researchers led by SwRI astronomer David Nesvorny now believe that the Inner Oort cloud looks like a spiral disk, around 0.24 light-years across, with two ...

The solar system could be packed with 1 million alien visitors, space rocks shaken away from our cosmic neighbor Alpha ...

Learn about the Oort cloud, a vast area beyond the inner solar system that is believed to contain icy objects arranged in a ...

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it ...

The Milky Way's tidal forces may be shaping the Oort Cloud's inner structure into a spiral shape.

Astronomers believe they've discovered a spiral structure inside the Oort cloud that surrounds our solar system.

New findings offer clues about the ancient origins of asteroids and their potential role in the formation of terrestrial ...

These embryos, somewhere between small planetesimals and fully formed planets, were abundant ... they could only have formed in the inner solar system. "Angrites are a small group of ancient ...

The inner Oort cloud, between 1,000 and 10,000 AU from the sun, displays a spiral formation with arms that extend 15,000 AU.

New research suggests the Oort Cloud may have a spiral structure like a mini galaxy. Supercomputer models reveal its ...

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar ...