Whilst many nebulae may look calm to the observer, they are, in fact, either the progeny of something violent or they are about to undergo a drastic change. In a gradual course of events, they get slowly torn apart while orbiting their center. Fragment by fragment, particle by particle, they dissolve into blurry shapes. Ghosts. And even those will eventually vanish.
More practicing of nebula-painting. Slowly getting the hang of it. Inspiration for this piece struck me while I was programming a little simulation that displays objects orbiting each other. Made the masses variable and starting-parameters for position and velocity-vector can be adjusted as well. It illustrates quite nicely the concept of planetary and comet-orbits, and gravitational slingshots
4:3 -- 1600x1200
16:9 -- 1920x1080
16:10 -- 1920x1200
If you have a smaller screen, the wallpaper should auto-shrink itself
Comment, fav, enjoy!