Spacetime is a four-dimensional continuum that merges the three dimensions of space with the one dimension of time, forming the fundamental framework within which the events of the universe occur. This concept is integral to Einstein's theory of General Relativity, which describes gravity as the curvature of spacetime caused by mass and energy.

Spacetime

A four-dimensional continuum is a model in physics that unifies the three dimensions of space with the dimension of time into a single four-dimensional construct, often referred to as spacetime. This framework is fundamental to the theory of relativity, where the fabric of spacetime is affected by mass and energy, leading to the phenomena of gravity and the warping of this continuum.

four-dimensional continuum

dimensions of space

dimension of time

fundamental framework

events of the universe

Einstein's Theory of General Relativity revolutionized our understanding of gravity by describing it not as a force, but as the curvature of spacetime caused by mass and energy. This theory has profound implications for the understanding of cosmic phenomena, including the bending of light around massive objects and the expansion of the universe.

Einstein's theory of General Relativity

Gravity is a fundamental force of nature that attracts two bodies with mass towards each other, playing a crucial role in the structure and behavior of the universe. It governs the motion of celestial bodies, influences tides, and is essential for phenomena such as the orbits of planets and the falling of objects on Earth.

gravity

The curvature of spacetime is a fundamental aspect of Einstein's General Theory of Relativity, describing how mass and energy influence the geometry of the universe, causing the gravitational attraction we observe. This curvature dictates the motion of objects and the propagation of light, effectively explaining gravity not as a force, but as the result of objects following the natural curvature of spacetime.

curvature of spacetime

Mass is a fundamental property of physical objects that quantifies the amount of matter contained within them, playing a crucial role in the laws of physics, especially in mechanics and gravitation. It is invariant in classical physics but can vary according to the theory of relativity when an object approaches the speed of light.

mass

Energy is a fundamental property of the universe that can neither be created nor destroyed, only transformed from one form to another. It is the driving force behind all physical processes and is essential for the functioning of both natural and engineered systems.

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