Here’s another design template for sale. This one is a large layered PSD file featuring various stars, suns, and light rays. It should work nicely for web backgrounds. Check it out here.

The description from GraphicRiver:

This is a large background template featuring several elements that can be toggled on and off to create different combinations. The background is a layered starfield with nebulae. A planet horizon can be made visible at the top of the image and two sets of glassy translucent bars are available as an overlay. Additionally, numerous color combinations and fading gradients are possible. This image is intended for web design or graphics, but is also suitable for general graphic design use.
Format: Adobe Photoshop PSD Width: 3600 px Height: 2800 px Resolution: 72 dpi Color: RGB
Included in the PSD file:
Starfield (7 layers); planet horizon; 2 sets of translucent vertical bars (narrow & wide); nebulae (3 layers); 5 color gradients (4 preset, 1 custom); 6 blending gradients (top black & white, bottom black & white, custom top & bottom); black background fill; 1 “read me” text layer
All layers and groups are labeled for ease of use.
Included in the ZIP file:
1 PSD file, layered; 3 JPG sample renders; 1 TXT help file