Einstein and the shape of spacetime
Albert Einstein held that space and time together made up the universe's fabric that could stretch and compress. Einstein suggested that the shape of spacetime is what gives rise to the force of gravity. A concentration of mass, like the earth or sun, bends space around it, like water that bends around the flow of a river. When other objects move closeby, they follow the curvature.
Einstein's field equations of general relativity, which show how matter and energy warp spacetime, gained acceptance when they successfully predicted the changes in Mercury's orbit.
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