I've always read that all matter has gravity. But, can we observe it? I mean, The Earth pulls us but what about small daily objects?
For example, if we release 2 small objects in space, do they get closer?
My point of asking this question is that, maybe the gravity comes from the rotation of the Earth, not from its mass. I know I'm wrong by saying that but I want to know about the experiment and observation (aka proof) of that concept.