Use soft brushes with low opacity in shades of magenta, cyan, and deep orange to simulate the gasses of a galaxy.
If you are behind the camera, the "Dark" in your subject line requires specific settings to avoid "noise" (graininess). 1366x768 Space Star Night Galaxy Nature Dark. D...
Open your lens as wide as it goes (f/2.8 or lower is ideal) to let in every bit of faint starlight. Use soft brushes with low opacity in shades
Based on your subject line, it sounds like you’re looking to capture or create a high-quality "Night Sky" aesthetic—likely for a wallpaper, a digital art piece, or a photography project. Based on your subject line, it sounds like
Avoid pure black. Real night skies have deep navy, charcoal, or dark purple undertones. Use "Curves" to crush the blacks but keep the highlights (the stars) crisp.
Add a light "mist" or "fog" layer at the bottom of the image to blend the nature elements into the sky.