Gravity has an infinite range, meaning every atom in your body is pulling on every galaxy in the universe.

According to Isaac Newton's Law of Universal Gravitation, published in his 1687 work 'Philosophiæ Naturalis Principia Mathematica', the gravitational force between two objects is inversely proportional to the square of the distance between them. This mathematical relationship implies that as the distance approaches infinity, the force approaches zero but never actually reaches it. Therefore, every mass in the universe exerts a measurable, albeit infinitesimal, pull on every other mass.Albert Einstein’s General Theory of Relativity, introduced in 1915, further refined this by describing gravity as the curvature of spacetime. When a mass exists, it creates a 'dimple' in the fabric of the universe that extends outward forever. While the strength of this curvature dilutes over vast distances, the field lines technically span the entire observable universe, which is currently estimated to be about 93 billion light-years in diameter.In practical terms, the gravitational pull of a human on a distant galaxy like Andromeda is trillions of times smaller than the weight of a single atom. However, physics dictates that these interactions are instantaneous in a Newtonian framework or travel at the speed of light in a relativistic one. This means your physical presence is mathematically linked to the movement of celestial bodies located at the farthest edges of space.Modern astrophysics continues to study these long-range interactions through the lens of Dark Matter and large-scale cosmic structures. These studies confirm that gravity is the primary force shaping the 'Cosmic Web', a network of filaments that connects galaxies across billions of parsecs. Even though your personal contribution to this web is negligible, it remains a fundamental part of the universal gravitational equation.