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:
einstein observatory einsteinobservatory heao heao heaob heaob astronomy high energy astronomy observatory highenergyastronomyobservatory PictionID Catalog TitleGD Details Optical Tube Filename.TIF Images from the Convair Dynamics Astronautics Atlas Negative Collection. The processing cataloging and digitization of these images