but there is no such thing as gravity ! there is only warped space ! however the idea that if gravity acts on something then it has mass is still relevant because interchange gravity (the old concept) with warped spae (the new and more accurate concept), and we still have a truth ! your comment about light light orbiting the sun.. its moving way too fast and its mass is way to little for the warped space to cause it to go into orbit !
There is some confusion about the proper use of terms.
--'Gravity' is real: two masses pull on each other. Gravitational pull maybe
due to warped space, but it is a real measurable force that acts nonetheless, given by F= G*m1*m2/r^2.
--A force pulls or pushes an object of mass. We are perpetually being pulled toward the Sun, because we have mass. A photon is unaffected by this.
--However if light is passing through space, and there is a warp in space it will appear to bend. It is not because it is being pulled toward a center of gravity, it is simply passing through that particular area of space.
Please please just accept this post, you are bringing me to tears