The Wonders of the Cosmos on Instagram: "In 1927, Dutch astronomer Jan Oort studied the motions of stars near the Sun and uncovered something revolutionary. Our star was not stationary, it was orbiting the center of the Milky Way, dragged along by the galaxy’s immense gravitational pull. From his work emerged the realization that the Sun is moving at an extraordinary speed, completing a single orbit around the galaxy only once every 200–250 million years. In its entire lifetime, the Sun has made