If you had a planet with the exact same mass and radius as the Earth, and adjusted the gravity constant to some value five-hundred million times larger, the schwarzschild radius should become considerably big, right? Instead of being about 8 millimeters, it would now be about 60 to 70 percent the radius of the body itself. So would this cause the planet to start collapsing immediately, and just how strong would the gravity have to be to cause the surface of the planet to start falling in on itself? Also, what does GM/c2 mean compared to 2GM/c2? I totally know that changing the gravity constant is impossible, let alone to that ridiculously high value.