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Venous circulation system of the hand
Venous circulation system of the foot
Blue-style Mac operating system
A system unit for a PC with a beautiful design
Windows operating system logo on a black background
Ubuntu icon from the Ubuntu operating system
Collision of robots. Cyborgs against the system
System shock 2 face
A drawn space system with planets
Solar flares. Photo courtesy of nasa
The Titanos universe as a solar eclipse
Solar eclipse in the sky above the clouds
Windows operating system logo on a black backgroundWindows operating system logo on a black background