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:
r sculptoris rsculptoris lunar round circle Observations using the Atacama Large Millimeter Array ALMA have revealed an unexpected spiral structure in the material around the old star Sculptoris. This feature has never been seen before and is probably caused by hidden companion star orbiting the star. This slice through the new ALMA