Relativity (Einstein's theories)

Einstein's relativity consists of two theories: special relativity and general relativity. Special relativity shows that as objects move faster, time slows down for them, and their mass increases. It also reveals that the speed of light is the maximum speed and remains constant. General relativity describes gravity not as a force, but as the warping of spacetime caused by mass and energy; massive objects like planets and stars curve spacetime around them, guiding the motion of other objects. Together, these theories revolutionized our understanding of space, time, and gravity, confirming that they are interconnected aspects of a four-dimensional fabric.