and visitors to spain are looking for these very dark very clear skies that have been lost in their own countries. spain's privilege situation did not go unnoticed by the great powers of the twentieth century who built their astronomical complexes here. these antenna has played a central role in the moon landing. nasa set them up in robledo d.h. of ala in the early one nine hundred sixty s. they're part of the u.s. agency satellite monitoring and space projects complex. in the one nine hundred seventy s. domes changed the landscape of sierra de last in amaria in southeastern spain at over two thousand meters altitude continental europe and largest observatory was