In 1915, Einstein explained that gravity arises because massive bodies warp space and time, or spacetime, causing free - falling objects to follow curved paths such as the arc of a thrown ball or the elliptical orbit of a planet around its sun. (sciencemag.org)
Physics Girl shows how the Magnus Effect lets athletes curve the path of a ball. (edutopia.org)
Cameras placed on the back of the seals showed them swimming along curving paths just before catching fish. (sciencemag.org)