According to their model, the Oort cloud looks like a spiral disk about 15,000 au across, offset by the ecliptic by about 30 degrees. But more interestingly, it has two spiral arms that almost ...

More information: David Nesvorny et al, A Spiral Structure in the Inner Oort Cloud, arXiv (2025). DOI: ...

When this model was run through NASA's Pleiades supercomputer, it produced a structure for the inner part of the cloud resembling the spiral disk of the Milky Way, with the arms of this inner Oort ...

The researchers involved with the new study were interested in the inner Oort cloud for another reason: its shape. Pairing an analytic model with the supercomputer simulation, they concluded that the ...

The spiral, Nesvorny added, is in the inner part of the Oort Cloud, the closest to us, and he still believes that the outer portion is spherical or shell-shaped.

Scientists Spot Spiral Structure at Edge of Solar System "A spiral structure with two twisted arms." / Off World / Astronomy / Oort Cloud / Solar System ...

The results depicted the inner Oort Cloud (1,000 – 10,000 AU) as a spiral disk spanning roughly 15,000 AU – featuring not one but two spiral arms. This structure makes the Oort Cloud resemble ...

"W e found that some comets in the inner Oort Cloud, found between 1,000 au to 10,000 au, form a long-lasting spiral structure," Luke Dones, a co-author of the new study, told Space.com.

"We found that some comets in the inner Oort cloud found between 1,000 au to 10,000 au, form a long-lasting spiral structure," Luke Dones, study team member and principal scientist at the ...

The spiral, Nesvorny added, is in the inner part of the Oort Cloud, the closest to us, and he still believes that the outer portion is spherical or shell-shaped.

The spiral, Nesvorny added, is in the inner part of the Oort Cloud, the closest to us, and he still believes that the outer portion is spherical or shell-shaped.

The spiral, Nesvorny added, is in the inner part of the Oort Cloud, the closest to us, and he still believes that the outer portion is spherical or shell-shaped.