1)   Moon 3D Space Tour 1.1
Pretend you're an astronaut and circle the moon from the comfort of your own desk with this screensaver. Watch as the moon appears before you, complete with real craters and mountains. OpenGL 3D rendering engine provides true photo-realistic quality.

 2)   Astronomy Stuff 1.2.0
Watch Nasa TV including live space shuttle launches and space walks plus all the Sky at Night programs from December 2001 over the internet plus view live solar images and get ISS and satellite pass predictions for your location.

 3)   Luna Screensaver 1.1
The free screensaver, Luna, was created by RateMyScreensaver.com and contains 19 high resolution images of the Moon. The Moon is Earth's only natural satellite. It has no formal English name other than the Moon, although it is sometimes called Luna.