Astronomical telescopes are instruments designed to observe celestial objects such as stars, planets, and galaxies. They gather and magnify light from these distant objects, allowing astronomers to study their properties and movements. There are two main types of telescopes: refractors, which use lenses, and reflectors, which use mirrors. These telescopes have played a crucial role in advancing our understanding of the universe. Notable examples include the Hubble Space Telescope, which has provided stunning images and valuable data about deep space, and the Kepler Space Telescope, which focused on discovering exoplanets outside our solar system.