To the extent that scientists understand gravity, it is a product of geometry; gravity is a curvature in the space-time continuum, and the extent of the curvature is determined by the extent of an object's mass. The curv... More » Science Astronomy

Gravity is one of the fundamental forces of the universe, and it keeps us on Earth because it is relentlessly attractive. Every massive particle exhibits gravity by pulling closer to every other particle. The strength of... More »

Sir Isaac Newton, an English mathematician and physicist, discovered gravity. Before Newton hypothesized about gravitation in his work "Principia," Galileo Galilee had already laid the foundation for gravitational theory... More »

Gravitational energy is the movement of an object or mass that is caused by the pull of gravity. This is caused on Earth by the strong attraction of all other masses to be drawn back to Earth's center. An example of grav... More »

Mass and weight are closely related because mass affects the weight of an object experiencing the effects of gravity. Weight is the measure of the force of gravity on an object's mass, while mass is the measure of how mu... More »

Weight is a measurement of the force placed on an object by gravity, whereas mass is the amount of matter an object contains. Mass is commonly denoted using m or M, and weight is denoted with W. More »

There are two formulas that may be used to calculate mass: mass is equal to the volume of an object multiplied by its density (m=v*d) and mass is equivalent to an object's weight divided by the acceleration of gravity (m... More »