Ever wondered what the universe sounds like? Here on Earth, the Five-hundred-meter Aperture Spherical Radio Telescope (FAST)—the world's largest and most sensitive radio telescope—listens closely from the quiet hills of Guizhou, China. With unmatched precision, FAST captures signals from pulsars, hunts for interstellar molecules, and even seeks signs of extraterrestrial life! FAST is open to scientists worldwide. The universe is calling. Let's explore it together.