Gravity

Gravity is a fundamental force of nature, where objects with mass attract each other. Universal Gravitation refers to the attractive force between any two objects or particles, which is related to their mass product and distance. Gravity is one of the most common forces in nature, with an infinite range, although it weakens rapidly with increasing distance. Gravity is not a simple force as we often understand it, but rather is formed by the curvature of spacetime. The presence of mass or energy causes the spacetime structure to bend, and this curvature determines the motion of objects. Gravity typically refers to the attraction of the Earth to objects and is a manifestation of gravity near the Earth’s surface. Therefore, it can be said that gravity is a special form of gravity. Gravity is one of the core physical mechanisms in fields such as cosmology and astrophysics. Einstein’s general theory of relativity regards gravity as the curvature of spacetime, and this theory predicts phenomena such as the bending of light near massive objects and the slowing of time in strong gravitational fields, all of which have been confirmed by experiments and observations. Gravity also profoundly influences the structure and evolution of the universe, from the formation of galaxies to the large-scale structure of the universe, to black holes and the origin of the universe. Gravity is a fundamental and universal natural force that is not only ubiquitous in daily life but also holds an extremely important position in scientific research.