What is gravity? I know it’s a natural force but does it act independently of mass or does gravity reside in mass?
What started me thinking about this was the analogy of gravity ‘warping’ space used by Sagan. The bowling ball on the trampoline. When less massive tennis ball is rolled near it, it becomes trapped by the distortion caused by the bowling ball. But rather than creating “gravity” this experiment relies on existing gravity. The tennis ball is really attracted to the earth not the bowling ball.
Why do the large gas planets have so much gravitational pull when they apparently don’t have much mass?
Where does gravity go when a star explodes?