astronomical survey

An astronomical survey is a systematic study of the sky to gather data about celestial objects like stars, galaxies, and planets. Researchers use telescopes and instruments to capture images and measure properties such as brightness, distance, and movement. Surveys aim to map the universe, identify cosmic phenomena, and understand its structure and evolution. They can cover large areas of the sky or focus on specific regions, often contributing to our knowledge of the cosmos, including discovering new objects and understanding how the universe changes over time.