Why do we have a galactic and a solar plane
12637
Why does everything spin?
13223
Is it possible to have things orbit around us?
105369
Why does orbiting matter form an accretion disk?
35883
Why do objects follow geodesics in spacetime?
106989
How does dark matter halo outside a galaxy help to explain galaxy rotation curve?
40405
Why do all the planets of the solar system orbit in roughly the same 2D plane?
90676
Why do light sources appear as stars sometimes?
68188
Are scientists missing the point with distant cosmic objects, or is it just me?
99150
Is there evidence of dark matter in our galaxy?
118334
How does the Sun provide enough energy to fuse protons?
100308
Temperature in space
95946
What causes the expansion of space?
121231
How does gravity cause nuclear fusion in stars?
149430
Why does the universe exhibit three large-scale spatial dimensions?
140641
Is the Star Wars Universe just one galaxy?
117326
Why energy curves spacetime?
79098
Why are extra dimensions necessary?