What would happen in the world if the gravitational constant increased 10 times? decreased by 10 times?

In the first case, the dimensions of all cosmic bodies would decrease. The orbits of bodies would decrease, and therefore, collisions of many of them would occur. The moon would fall to the Earth, and the planets, together with the satellites, would fall to the Sun. Radiation from the Sun and other stars would increase dramatically. The universe would be permeated by powerful neutrino, X-rays and gamma rays.
In the second case, the orbits of the planets and their satellites would become hyperbolic, due to which the solar system and planetary systems of other stars would disintegrate. The dimensions of all cosmic bodies would increase. Thermonuclear reactions in the interior of the Sun and the overwhelming number of stars would stop, and the stars would gradually go out.

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