Solar is one of the splash plug-ins available with Plymouth, which fits well with Fedora 10 considering the desktop theme. Solar is also a visually advanced plug-in. Below is the video that shows a number of planets and other graphics rotating around what would be the Sun.
Fade-in is a simple but elegant plug-in for Plymouth. As implied by its name, the screen fades in and out as a number of astronomical stars begin appearing across the screen (that part though seems unnecessary).