Planets may be forming from dust disks because these disks are filled with completely empty lanes.
We can arrive at this answer because:
- The existence of empty lanes allows the dust disks to transform into many different materials, including new planets.
- In this case, there is a cooling of the dust disk, which cools more and more over time.
- This cooling causes all the particles in that disk to clot.
- Coagulation increases the density of the particles and if they are dense enough they can form escape accretions.
Escape accretions allow for the formation of planetary embryos, which may form planets in the future.
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