Astronomical survey

An astronomical survey is like taking a very big picture of the sky with a special camera. It’s like taking a picture of your whole neighborhood from high up in the sky. The camera takes many pictures over a long time to see everything in the sky. Scientists use these pictures to learn about different things like stars, planets, and galaxies. They can also see if anything in the sky is changing or moving. It’s like taking a big picture puzzle with lots of pieces and putting them all together to learn more about space.