Looking at the EXIF (with exiftool) for the image uploaded by NASA (https://www.nasa.gov/wp-content/uploads/2026/04/art002e00019...), apparently this was taken by a Nikon D5 with an AF-S Zoom-Nikkor 14-24mm f/2.8G ED and developed with Lightroom. It also seems like very little was done in Lightroom. Amazing...
I dumped the whole EXIF here: https://gist.github.com/umgefahren/a6f555e6588a98adb74eed79d...

Before Lightroom it might have looked closer to this: https://images-assets.nasa.gov/image/art002e000193/art002e00...

The photograph appears to show nightime on Earth with just a sliver of daytime. Beyond cities in Iberia and along the coast of Africa, most of what we can see would be reflected light from the Moon? We are just past full moon on April 1.