Why do Solar Systems form in a disc shape?
46411
Why are our planets in the solar system all on the same disc/plane/layer?
47502
Newtons Cradle, Collision Theory
7860
Why do floating water drops form spheres?
94233
Why are images formed?
63731
Can we characterize the Möbius transformations that maps the unit disk into itself?
48740
What is the homeomorphism between a disk and an ellipse?
105885
Why are triangles drawn like so when working with gravity on an inclined plane?
40405
Why do all the planets of the solar system orbit in roughly the same 2D plane?
149430
Why does the universe exhibit three large-scale spatial dimensions?
84229
Why the galaxies form 2D planes (or spiral-like) instead of 3D balls (or spherical-like)?
19503
Why does a circle enclose the largest area?
33093
Two rotating discs with same angular momentum when brought in contact completely stop. Why is the angular momentum not conserved in this case?
42374
Shape of a rotating fluid surface
103778
Geometric interpretation of connection forms, torsion forms, curvature forms, etc
10778
How Does Dark Matter Form Lumps?
2842
Photons from stars--how do they fill in such large angular distances?
95940
Conservation of angular momentum in a planetary system