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http://www.nytimes.com/2006/12/05/sc...ce/05stat.html
Destination Is the Space Station, but Many Experts Ask What For By JOHN SCHWARTZ Published: December 5, 2006 Once again, the shuttle Discovery is about to blast into space. And once again, it will dock with the International Space Station, and astronauts will continue the process of building the half-completed orbiting laboratory in a mission full of daunting challenges. But the majesty of the first nighttime liftoff in more than four years, now scheduled for Thursday just before 9:36 p.m. Eastern time, will not dispel a question that has long been the subject of sharp debate among experts: What is the space station for? In 1998, when its first components were launched as a replacement for the Mir, a worn-out Soviet-era relic, the station was billed as a manned science lab of nearly unlimited potential, with promises of advances in areas like pharmaceuticals thanks to the ultrapure crystals that could be grown in a microgravity environment. It was to be finished by 2004, and it was to cost about $40 billion, shared by 16 nations, including the United States, Canada, Russia and the European Union. Those goals are barely recognizable now. As the Columbia catastrophe forced a two-and-a-half-year delay in con- struction missions by the shuttle fleet, and as cost overruns and changing presidential administrations forced NASA to rethink its entire science mission, the station's price tag has ballooned to $100 billion and the completion date has moved to 2010. And questions about the station's scientific value have grown sharper than ever. David J. Goldston, the depar- ting chief of staff for the House Science Committee, said in an interview that the National Aeronautics and Space Administration now seemed more motivated by the need to satisfy its commitments to international partners than by any compelling scientific objectives. "I've never heard anyone say, 'We have to do this be- cause it's important for the future of the U.S. space program or science,' " Mr. Goldston said. NASA is now focused heavily on building a new gener- ation of space vehicles for exploring the Moon and Mars; yesterday it announced plans to establish an international base camp on the Moon by 2024. But officials insist that today's space system is a crucial element of building tomorrow's. In particular, they say, the station is essential for researching the potential effects of prolonged weightlessness on astronauts: a round trip to Mars, as envisioned by President Bush in his long-term goals for human spaceflight, would take at least two years. But the agency has also sharply cut back plans for scientific experiments. Plans to take equipment like a 10-ton centrifuge module, which was developed by the Japanese space agency and which could spin to produce artificial gravity for experiments on small animals, have been canceled. The budget crunch for the program is so pronounced that this year, the station program manager, Michael T. Suffredini, looked into having all NASA science experiments aboard the station shut down during the 2007 fiscal year. (He has since backed away from that idea.) Along with tight budgets, NASA faces an even tighter deadline: completing the station by 2010, when the agency is planning to retire the shuttle fleet. The next generation of vehicles will not be ready before 2014, leaving the world dependent on the Russian and European space programs, and potentially on entre- preneurs partly financed by NASA, for access to the station. The notion of a completed station with such limited access, and potentially limited utility, led Senator Barbara A. Mikulski, Democrat of Maryland, to ask NASA's administrator, Michael D. Griffin, in April, "Is this going to be a techno-whoops?" Mr. Griffin responded, "I certainly hope not," and ex- plained that the need to complete the station and to develop tomorrow's space fleet has meant making choices about how best to use the station during the construction process. Science work in orbit had to be narrowed, he testified, with a tight focus on conducting scientific work that can help the space agency keep astronauts healthy on long missions to the Moon and Mars. "NASA cannot do everything that our many constituen- cies would like us to do within our $16.8 billion budget," he said. The risks of space travel are anything but tamed. Maintaining the station and its equipment is a continuing challenge. Maintaining astronauts' health may be an even greater one. Experts say that in zero gravity they suffer from osteoporosis at a rate 10 times that of postmenopausal women. On a trip to Mars, 40 percent of them would lose more than half of the bone mineral in their hips, according to James A. Pawelczyk, an assistant professor of physiol- ogy and kinesiology at Pennsylvania State University and a former astronaut. The returning spacefarers would have hips as delicate as eggshells. Muscle mass also declines, and efforts to prevent the process have not been very successful, said Julie Robinson, the acting manager of science projects for the station program. "Over all, we can say we've made progress, but we're not where we need to be for exploration missions," she said. Outside experts have had reservations about the shift. In a report this year, the National Research Council said the space agency lacked a strong plan for scientific research or for use of the space station "in support of the exploration missions." NASA has not formally responded, but Dr. Robinson said the science was gearing up along the lines suggested by the report. The increasing emphasis on the next step has left many experts worried that the orbiting laboratory is being treated like an albatross, to be cast aside as quickly as possible. "Low-earth orbit" - the station orbits some 220 miles above the Earth - "should not be abandoned in favor of going to the Moon and Mars," said Jeff M. Bingham, the staff director for the Senate Commerce subcommittee on science and space. "We're sort of saying, not too fast." Current law requires that 15 percent of the station's science budget still be devoted to the hard science research that was originally acclaimed in the 1990s. The legislation also officially declares the station a national laboratory, a move intended to open the station more broadly to research and financing from outside agencies and businesses. In defense of the station's potential, Mr. Bingham points out that it is just half finished and has half the six-member crew that the fully completed station is designed to support. "It's not a space station that is or should be expected to be producing anything of any significance by now," he said. But scientists hoping to conduct research in the microgravity environment of the station say the new focus on the Moon and Mars has done great damage to their field. "Since 1990, NASA has spent literally billions of dollars building up a world-class microgravity program that has been basically squandered," said Peter W. Voorhees, a professor of engineering at Northwestern University. "There's a perfect example of snatching defeat from the jaws of victory." NASA officials have talked of a return to the science focus once the next generation of vehicles is available to get projects up to the completed station, Dr. Voorhees said, but he added: "The problem with this is the science com- munity is not like a water faucet you can turn off and on at will. If you turn it off now, it will be extraordinarily difficult to turn it on again down the line." Important scientific work will be done in space, said John M. Logsdon, director of the Space Policy Institute at George Washington University. But it may be conducted by inter- national partners after the United States has shifted its focus to the Moon. "It would be ironic," Mr. Logsdon said, "if research break- throughs came through the work of our partners, rather than research that we've chosen to forgo." The station's principal role, suggested John E. Pike, the director of GlobalSecurity.org, a group that monitors military and scientific programs, may be as "an insurance policy, to retain a toehold in orbit, in space - to keep the program going until we can figure out a new reason for doing it." The worst case, he said, would be a variant of the "techno- whoops" hypothesis: a national failure of will that would leave the Moon initiative stalled and the science program mothballed. "Maybe we'll find out that spaceflight turned out to be a historical aberration, like zeppelins," he said, adding: "That would be the end of the frontier. I just don't want to go there." .. .. -- |
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(David Polewka)" wrote in
message oups.com http://www.nytimes.com/2006/12/05/sc...ce/05stat.html Destination Is the Space Station, but Many Experts Ask What For For spending as much loot as possible, and for taking as much time as possible while further polluting mother Earth and getting the least possible return on the almighty dollar/euro. - Brad Guth -- Posted via Mailgate.ORG Server - http://www.Mailgate.ORG |
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Brad Guth wrote:
(David Polewka)" wrote in message oups.com http://www.nytimes.com/2006/12/05/sc...ce/05stat.html Destination Is the Space Station, but Many Experts Ask What For For spending as much loot as possible, and for taking as much time as possible while further polluting mother Earth and getting the least possible return on the almighty dollar/euro. - Brad Guth Plus getting lots of frothy diatribes composed in Guth-Speak posted to usenet. |
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Prat: if we can crack a lot of tough physics, we'll go wherever we like
and maybe even go to whenever we like. You ever thought what helps you have the same thougth for 5 minutes, assuming you have done it! . We have people who can do much better than that, but can't wait for twits who who think that sitting on top of a controlled explosion is the way to go. It is certainly the way togo - in the sense that they won't be coming back! Apart from a few experiments on seeds in space, I'd bid nothing as a human being for that stuff: I'd bid plently, a hundred billion £ for a start, to get fusion off the ground. Sorcerer wrote: wrote in message oups.com... | | (David Polewka) wrote: | The risks of space travel are anything but tamed. | Maintaining the station and its equipment is a | continuing challenge. Maintaining astronauts' health | may be an even greater one. Experts say that in zero | gravity they suffer from osteoporosis at a rate 10 times | that of postmenopausal women. | | On a trip to Mars, 40 percent of them would lose more | than half of the bone mineral in their hips, according to | James A. Pawelczyk, an assistant professor of physiol- | ogy and kinesiology at Pennsylvania State University | and a former astronaut. The returning spacefarers | would have hips as delicate as eggshells. | | Muscle mass also declines, and efforts to prevent the | process have not been very successful, said Julie | Robinson, the acting manager of science projects for | the station program. | | In the same way that mammals evolved into dolphins to suit | the watery environment, so too will man evolve into space | creature - mark my words. | | Rohan. You words are marked. And forgotten, imbecile. Good-bye, Dr What! -- foolsrushin.' |
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![]() Roy. Just Roy. wrote: (David Polewka) wrote: What is the space station for? Obviously, it will be a refuge for humankind to survive all that influenza you want to release. People used to get the flu and lose 10 pounds during 3 or 4 days of sickness. Could the suppression of influenza be a factor in the obesity epidemic? .. .. -- |
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