7art Space ScreenSaver 

7art Space screensaver brings you 22 pictures with incredible cosmic views. The 7art Space screensaver will teleport you into a deep space to vanish away in grandiose star scenery.
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7art Galaxy ScreenSaver 

This screensaver contains 32 photos of different objects in the Universe made mainly by Hubble telescope. You can see the formation of new stars and relict light of ancient stars, "blackholes" and "supernova" stars located far far away from us.
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Gravitational Lensing 

With this program, one can draw images to see the effect of gravitational lensing. You can easily test the effects of several parameters by changing them and redrawing the image.
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