galaxy nebula space background purple blue stars
Prompt
Photorealistic deep-space nebula background filling the entire frame, an abstract cosmic cloud texture with luminous rose, violet, burnt orange, and electric cyan gas swirling around a broad dark dust void in the lower left. Dense star field scattered throughout, with a few crisp bright stars showing subtle diffraction spikes and many tiny blue-white pinpoints fading into depth. Soft translucent layers of ionized vapor create a glowing, ethereal mood, with high contrast between velvety black space and radiant cloudy filaments. Composition feels expansive and immersive, no horizon or objects, just richly detailed celestial texture. Captured as wide-field astrophotography through a deep-space telescope, long exposure, ultra-sharp detail, natural cosmic color balance, gentle grain, no oversaturated HDR.
Negative Prompt
people, faces, spacecraft, planets, astronauts, logos, watermarks, readable text, recognizable landmarks, cartoon style, fantasy illustration, oversaturated colors, HDR halos, blurry stars, banding, pixelation, artificial patterns, duplicate star spikes, noisy compression artifacts