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

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.

Groundbreaking research reveals the Oort Cloud's shape as a spiral structure, challenging traditional beliefs about its ...

Fig.1: Artistic representation of the Milky Way. The position of the Solar System is pointed by a white row. Our sun and its ...

New research suggests the Oort cloud, a shell of icy objects at the edge of our solar system, may feature spiral arms similar to the Milky Way, revealing a complex cosmic structure beyond Pluto.

Predictions are uncertain, but the solar system may be pushed farther from the galactic core or even ejected entirely from ...

An international research team led by the University of Vienna has discovered that the Solar System traversed the Orion ...

Most of the long-period comets in the Solar System come from the outer Oort Cloud. The inner region is much more stable. It's closer to the Sun, which means it's more strongly bound by the Sun's ...

The giant cloud of detritus is thought to be the source of strange comets and meteorites flying past Earth such as the ...

Using NASA's James Webb Space Telescope, Northwestern astrophysicists gained the longest, most detailed glimpse yet of the ...

NASA's flagship space telescope captured flares from the disk of superheated material around the black hole, revealing the ...