According to General Relativity, the surface that is our universe is curved in the presence of mass. This affects the trajectories of objects and makes it appear that masses are being attracted towards each other.theCandyman said:Why is gravity? What is it that causes attraction between two particles, no matter what their distance from each other or thier masses or even what is between the two?
It certainly does, and I don't have a good explanation for this!HallsofIvy said:To quote Isaac Newton on the subject "Fengo non hypothesen" ("I frame no hypotheses").
As to geometer's response, of course that leaves open the question why mass curves space.