Commissioned piece I did for Project Nebula quite a while ago.
This is a 5-part panorama piece, meant to be discovered piece by piece, each one being 4k resolution, until you get the entire panorama. Very tough to make such a wide piece, with each segment having something unique and interesting within, so they work as standalone-wallpapers also.
It shows a martian fleet being gathered over their homeworld, waiting for the signal to move out...