I was browsing Reddit and came across these two threads. It seems that the wallpaper for the Seek & Destroy update uses the explosion of the Space Shuttle Challenger, in which seven American astronauts tragically lost their lives.
Maybe it was an accident on the part of the artist, but it seems in incredibly poor taste.
It is quite literally 1:1 almost identical to the Challenger explosion, you can even see that it has an outline unlike other parts of the wallpaper.
Certain parts of it are COMPLETELY identical and you can literally match individual curves in the explosion cloud. The only thing that seems to have been changed was the addition of more debris and the extension of the smoke above the main cloud.
The unique black outline around this either means that it was poorly cropped from somewhere…
Or more likely that the artist wanted to highlight this particular part of the wallpaper for some reason. Considering it looks to be otherwise high quality and well defined, I’d argue that the outline isn’t a result of “poor cropping” and most certainly intentional. Why that would be I don’t know, gotta ask the artist.