Astronomical observation is the practice of studying celestial objects and phenomena in the universe. This includes observing stars, planets, galaxies, and other cosmic entities using various tools and techniques. Astronomers utilize telescopes, both ground-based and space-based, to gather light and data from these distant objects, allowing them to analyze their properties and behaviors. The information obtained from astronomical observations helps scientists understand the universe's structure, formation, and evolution. Key concepts in this field include light years, spectroscopy, and redshift, which aid in measuring distances and determining the composition of celestial bodies. These observations contribute to our knowledge of the cosmos and our place within it.