Early in our Solar System’s history, bits of icy debris were scattered and then gradually coaxed into a spiral alignment in the Oort Cloud.

Even the little-understood Oort Cloud, at the outer edges of our solar system beyond view, has a partly spiral structure.

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 ...

(For objects near the Sun ... "The disk, when viewed from a distance, would appear as a spiral structure with two twisted arms," the authors wrote. Those "arms" resemble the elongated structures ...

A European dark matter telescope called Euclid has released its first treasure trove of data, showing galaxies by the ...

This NASA/ESA Hubble Space Telescope image of a vibrant spiral galaxy called NGC 5042 resides about 48 million light-years ...

According to the paper, taking a picture of this two-armed spiral will be exceedingly difficult. The authors suggest doing so would either require direct observation of a large number of objects ...

While Earth and the other planets in the solar system are kept in their orbit due to the sun’s gravity, the orbit of objects within the Oort cloud is tilted by the Galactic tide. Gravitational forces ...