NASA and ESA Complete Comparative Exploration Architecture Study

[techpr]

Over the last 6 months, representatives from NASA and the European Space Agency, or ESA, have been engaged in a detailed assessment of potential programs and technologies that when conducted cooperatively could one day support a human outpost on the moon.

More... (http://www.nasa.gov/home/hqnews/2008/jul/HQ_08171_NASA_ESA_Architecture_Study.html)