This image was acquired from
wikimedia. 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:
Photonsphere RJN. en The computer animated picture depicts how very compact star would look to nearby observer The star pictured is actually more compact that any known except black hole so it is only hypothetical nasa gov Robert Nemiroff Robert Nemiroff Uploaded with Astronomy Picture of the Day Earth from space