Humanity's quest for the Earth-Sun distance is an epic tale brimming with wisdom. From Aristarchus's rough estimate based on lunar phases, to Kepler's laws providing the theoretical framework, and then to precise triangulation measurements utilizing opportunities such as Venus transits and near-Earth asteroids, each improvement in accuracy signifies an expansion of the boundaries of human knowledge and a deepening understanding of the cosmic order. This value, known as the "astronomical unit," is not only a fundamental constant in physics but also the "first milestone" in civilization's measurement of its place in the universe. Understanding its measurement history is understanding how humanity, with limited tools, has gradually unraveled the mysteries of the infinite universe. Our "Distance Between Earth and the Sun" exhibit condenses this millennia-long scientific history onto a 3-meter-long interactive platform. You are no longer passively receiving a number but can "choose" to ent
