For all science nerds is GRAVITY everywhre in the universe? All galaxies planets satellites stars are affected by it?

Einstein’s theory that shows that energy equals mass times the speed of light squared, establishes a relationship between mass and energy, and refines the first law of thermodynamics. As such, it applies to all energy and matter in a broad sense, not gravity specifically. 

This equation provides a mechanism to explain the energy source of stars and opened the way to advances in nuclear energy and nuclear medicine.