Why does orbiting matter form an accretion disk?
40405
Why do all the planets of the solar system orbit in roughly the same 2D plane?
29686
Why would Antimatter behave differently via Gravity?
51738
How do the Planets and Sun get their initial spin?
66232
At what moment will matter falling into a black hole affect its size?
125794
What is the origin of spin of celestial objects?
33056
Why will data from a black hole solve the gravity problem?
31825
Why are objects at rest in motion through spacetime at the speed of light?
11613
What kind of matter are black holes made of?
74770
Is Dark Matter called "Matter" only because of gravity?
110067
Are planets actually moving in elliptical orbits around the Sun or do they move in circular orbits around their center of mass?
141215
What's the technical explanation for gravity to exist inside a spacecraft in science fiction?
133186
Understanding the "$\pi$" of a rotating disk
90777
Can a black hole form due to Lorentz contraction?
36008
Please clarify how entropy increases when matter gravitationally coalesces
146782
Why is the period of rotation the same for two stars orbiting the same centre?
96923
Why do electrons orbit protons?
15903
What is the general relativity explanation for why objects at the center of the Earth are weightless?