Publications by authors named "Luca Penasa"
Proc Natl Acad Sci U S A
May 2020
Article Synopsis
- Observations of comet nuclei show they're primarily made of a mixture of ice and durable materials, with high porosity and low bulk strength, though their properties are not fully understood.
- By examining comet 67P/Churyumov-Gerasimenko's surface and modeling its layered structure, researchers suggest that its formation involved significant motion and deformation without severe damage.
- The findings indicate that the comet's physical characteristics support the idea of an impact between two comet-like bodies, leading to extensive structural changes driven by both folding and cracking.
