If gravity can be thought of as masses leaving dents on a spacetime 'sheet', what is holding up that sheet?
6474
How exactly does curved space-time describe the force of gravity?
2929
How can we recover the Newtonian gravitational potential from the metric of general relativity?
19829
Is light affected by gravity? Why?
30765
Is anti-gravity (i.e. repulsive gravity) possible in theoretical physics?
73673
What is gravity and what causes objects to act against it?
49577
Spherical / Relative Gravity
11613
What kind of matter are black holes made of?
115490
Is particle superposition reflected in the particle's gravitational footprint?
10504
What are the reasons to expect that gravity should be quantized?
24042
Why does gravity need to be quantised?
32338
A Basic Question about Gravity, Inertia or Momentum or something along those lines
20557
Does the curvature of spacetime theory assume gravity?
19662
Can a black hole be explained by Newtonian gravity?
24664
What does it mean for objects to follow the curvature of space?
2723
Physically what does warping (of space-time) mean?
22168
What keeps mass from turning into energy?
33271
Two bodies of finite size treated as two point masses in Newtonian gravity