Astronomical devices are tools used to observe and measure celestial bodies and phenomena. These instruments help astronomers understand the universe, track the movement of stars, planets, and other celestial objects. Common examples include telescopes, which magnify distant objects, and astrolabes, which can determine the position of stars in the sky. Historically, devices like the armillary sphere and quadrant were essential for navigation and understanding the cosmos. Today, advanced technology such as space telescopes and radio telescopes allows scientists to explore the universe in greater detail, providing insights into the origins and structure of galaxies and other cosmic entities.