Local gravity has sometimes been called Newtonian Laws of Gravity. It describes how objects behave in response to Earth's (or a body of similar size) gravitational pull. Some have tried to extrapolate to larger systems with bodies much bigger or much smaller than Earth, but these efforts have been unsuccesful. Let me go on the record by saying that local gravity exists. It can be tested by almost anyone at almost anytime. I can drop an object and observe it fall. This does not mean that we can leap to the conclusion that gravity exists everywhere, the very claim put forward by the theory of universal gravity.
Univeral Gravitationists (UG's) would have you believe however that because of this gravity exists everywhere! UG's have come up with weak "theories" called Quantum Mechanics and General Relativity. QM attempts to explain the behavior of very small things like subparticles and GR attempts to explain the behavior of very large bodies like planets, stars, and galaxies. However, these notions are very confusing. Even many UG's claim not to understand them. Take the famous physicist, Richard Feynman, who said, "“I think I can safely say that nobody understands Quantum Mechanics." Even UG's doubt QM, and no surprise. Did you know a graviton, the most essential element of QM, has never even been observed? It's just a theory! Not only are these QM and GR weak and confusing, but they are also inconsistent with one another, as well as with local gravity. UG's have been struggling for decades to harmonize them. They call the endeavor TOE, or the Theory of Everything. But to date no one has found it. There are "missing links," if you will, between the theories. Nevertheless, UG's search for these missing links to no avail.
Now a True Believer could have told them their efforts were futile fron the start because he recognizes that the theory of universal gravity is in direct conflict with the Bible. The Bible tells us that God holds all things together through his Word.* All things means everything from supergalaxies to the electron. Why then do UG's insist on throwing God out of their equations? Simple. They subscribe to an atheistic belief system called "naturalism" which posits that all things in the universe can be explained by natural causes. There is no God according to naturalism so don't bother searching for Him.
Why do UG's believe in naturalism? Simple. They are in rebelliion to God. They don't want to submit and so they are easily misled by Satan's lies. The devil loves to prey on our weaknesses. Many UG's are scientists and booksmart fellows. It is easy for Satan to decieve them by appealing to their egos. QM and GR are very confusing. By pretending to understand them, UG's feel superior to everyone else. It's just like how Hitler thought his Aryan race was superior to God's Chosen People.**
So, True Believers, do not be taken in by sciency types who try to tell you that gravity holds everything together. You have the unfailing Word of the Lord on you side, and all a UG has is an empty theory and an aching soul.
* - Hebrews 1:2-3 tells us "[But] in [a]the last of these days He has spoken to us in [the person of a] Son, Whom He appointed Heir and lawful Owner of all things, also by and through Whom He created the worlds and the reaches of space and the ages of time [He made, produced, built, operated, and arranged them in order].
He is the sole expression of the glory of God [the Light-being, the [out-raying or radiance of the divine], and He is the perfect imprint and very image of [God's] nature, upholding and maintaining and guiding and propelling the universe by His mighty word of power. When He had by offering Himself accomplished our cleansing of sins and riddance of guilt, He sat down at the right hand of the divine Majesty on high . . ." Amplified Bible
** - The connection between UG's and Hitler is not exaggerated when you realized that UG's all believe in macroevolution as well. Macroevolution tells us that we are evolving to be gods. Some people are more evolved then others, it claims, and so we can exterminate the inferior ones. This is known as "survival of the fittest." To learn more of the truth behind the lie that is macroevolution check out www.answersingenesis.com.