This animated visualization displays the planets of the solar system with relative sizes to scale, while distances are compressed for visual clarity. Each planet is rendered as a circle with SVG gradient fills—including linear and radial gradients—to give them a more dimensional, planet-like appearance against a black background. The data comes from Wikipedia’s list of gravitationally rounded objects. The code uses D3’s `select`, `transition`, and `easeLinear` to animate the planetary motion, with the Sun and its orbiting bodies depicted as static or moving graphical elements.