Albert Einstein (relativity)

Albert Einstein’s theory of relativity fundamentally changed how we understand space and time. Special relativity, introduced in 1905, shows that time and space are linked and relative to the observer’s motion, meaning time can slow down for objects moving near light speed. General relativity, published in 1915, describes gravity not as a force but as curves in spacetime caused by mass and energy. Massive objects like stars bend spacetime, influencing the motion of planets and light. Overall, Einstein’s work reveals that the universe operates in a flexible, interconnected fabric of space and time governed by the geometry of the universe.