The "Vision for Space Exploration" of President George W. Bush, space science, and US space policy

On January 14, 2004 President George W. Bush announced a major overhaul of U.S. space exploration strategy and infrastructure, stipulating that NASA complete the International Space Station (ISS) and retire the Space Shuttle fleet by 2010, develop a new suite of launch and exploration vehicles for deployment shortly thereafter, and embark on a program of human exploration of the solar system with crewed landings on the moon by 2020 and, eventually, Mars. The "Vision for Space Exploration" would be funded by resources liberated by the end of the International Space Station construction and the Shuttle program, assuming a very modestly increasing NASA budget. While this decision marks a decisive attempt to grapple with longstanding issues concerning the Space Shuttle and station, it has stimulated both optimism and fear within the space community. There is skepticism about its intent, its feasibility, and concern for the effects on various areas of space science and technology. This decision is similar to other, major such initiatives in the history of NASA and space flight, relies on longstanding scenarios and models, and much of its content has been proposed unsuccessfully in the past. (C) 2009 Elsevier Ltd. All rights reserved.