On March 9, 1497, Nicolaus Copernicus made his first recorded astronomical observation, documenting the occultation of the star Aldebaran by the Moon.
This early observation marked the beginning of his lifelong study of the heavens, eventually leading to his groundbreaking heliocentric theory, which revolutionised the understanding of the solar system.
By carefully noting celestial movements, Copernicus laid the foundation for modern astronomy, challenging the long-held geocentric model and inspiring future scientists like Galileo and Kepler.