NCCS Discover Supercomputer. Original from NASA. Digitally enhanced by rawpixel.
Out of this world public domain images from NASA. All original images and many more can be found from the NASA Image Library
Curated higher resolutions with digital enhancement without attribution required can be downloaded: www.rawpixel.com/board/418580/nasa
This is a free download under CC Attribution ( CC BY 4.0) Please credit NASA and rawpixel.com.