What is the evidence for the Oort cloud? What is the current leading hypothesis of how it formed and how do commets we find support that? - Quora
Do scientists know how much mass there is in the Kuiper Belt? Would it be enough for say a Mars or a Venus? - Quora
![What effect, if any, do the objects in the Kuiper Belt and Oort Cloud have on the orbits or characteristics of the eight major planets? | Astronomy.com What effect, if any, do the objects in the Kuiper Belt and Oort Cloud have on the orbits or characteristics of the eight major planets? | Astronomy.com](https://www.astronomy.com/wp-content/uploads/sites/2/2021/09/Kuiper-Belt-and-Oort-Cloud.jpg)