L'avis de quelques astronautes sur la NASA et son Futur

This new unified space vision (USV) should be a comprehensive and balanced approach that addresses the long-term concurrent needs of space and science explorations, as well as the needs for space-based human economic development, which will benefit all of humanity while fostering world peace. It is a new paradigm of space vision with four critical strategic components:

It is now time, at the dawn of the 21st century, for humanity to embark on vertical and outward expansion into space—not only for explorations to challenging planetary destinations, but more importantly, for revolutionary space-based economic and commercial development and space industrialization to the high frontiers