This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
astronomy space telescope observatory planets stars invention discovery scifi scifi crater blackandwhite monochrome lunar black and white Reference DS.GP. This photograph shows an enlargement of the ring crater Copernicus as captured using Grubb Parsons equipment. This photograph is taken from the Grubb Parsons Ltd collection at