Eavesdropping on outer space- search ????other civilizations have been going on for 50 years, but the results are scantyEavesdropping on outer space- search ????other civilizations have been going on for 50 years, but the results are scanty
Antique abstraction a tangle of metal pipes plates on a gray backgroundAntique abstraction a tangle of metal pipes plates on a gray background
Different pipes. bright lines on a gray backgroundDifferent pipes. Bright lines on a gray background