Copernicus is the answer you are looking for hope this helps!!!
Answer:
Galileo Galilei is often credited with being the first astronomer to build a telescope. However, the first telescope was built by Hans Lippershey in the early 1600s. He focused his telescope while reducing the amount of light it emitted. Lipperhey was a German-Dutch glassmaker. He inspired others to work on improving the telescope through his model.
Explanation:
The answer would be in a spiral arm. The spiral arms are then region of the stars being extended from the spiral's center and the barred spiral galaxies. The region which is a long and thin one looks like a spiral and so the name spiral galaxy is given.
Mekong Longest river in Southeast Asian which flows through Vietnam then empties into the South China Sea
