gravitational constant

The Gravitational Constant, often denoted as "G," is a fundamental number in physics that measures the strength of gravity between two objects. It helps us understand how objects, like planets and stars, attract each other. G is essential in Newton's Law of Universal Gravitation and Einstein's theory of General Relativity. With a value of about 6.674 × 10^-11 N(m/kg)^2, it allows scientists to calculate gravitational forces and understand the structure of the universe. In essence, it quantifies how mass influences the pull of gravity at any scale, from apples to galaxies.