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Gravity is an attractive force that affects and is affected by all mass and - in general relativity - energy, pressure, and stress. Prefer newtonian-gravity or general-relativity if sensible.

1 vote

While 'frame dragging' is the 'frame' just orbiting or is it even spiralling into the source...

During frame dragging the frame does spiral into the source of gravity and that how gravity works. …
Rounak Sarkar's user avatar
18 votes
8 answers
3k views

Does gravity reverse entropy? [duplicate]

Why does it seems to me that gravity reverses entropy:- Let's take the local group as a closed system. It is gravitationaly bounded. Exclude dark energy. … As time will pass, slowly every galaxy will start to merge with each other because of gravity. …
Rounak Sarkar's user avatar
9 votes
4 answers
2k views

Gravitons and general relativity

So all the 3 fundamental forces in nature has a carrier particle except gravity. So we have hypothesized the existence of graviton. … But I want to know that how does the concept of graviton relates to the concepts of general relativity which describes gravity as the curvature of space-time. …
Rounak Sarkar's user avatar