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 Yahoo! News Search Results for Weblogs Will Natalie Portman step in for Angelina Jolie in 'Gravity'? What a difference a few days makes. Because of the film festivals in Venice and Telluride (all leading up to Toronto), all of a sudden there are several major Oscar-level movies being buzzed about, one of them being Darren Aronofsky's... VASIMR: hope or hype for Mars exploration? An advanced electric propulsion concept known as VASIMR has won support from some, including NASA leadership, for its potential to greatly reduce the travel times for human Mars missions. Jeff Foust reports that some Mars advocates are skeptical, at best, of the ability of this system to match expectations. Building a foundation for commercial crew As the debate over commercial crew development continues in Washington, NASA and industry are taking initial steps on such efforts. Jeff Foust discusses some of the ongoing efforts and planning that continue despite political uncertainty. |