CAMBRIDGE, Mass. -- A group of scientists, technologists, and policy experts who gathered at MIT Nov. 11-14 spoke enthusiastically about the prospect of lunar and Mars missions, but cautioned that the path to exploration beyond Earth orbit will not be easy and will probably require significant changes at NASA and in the aerospace industry.

 

"We can in fact do this mission inside the resources that are available," but there are several thorny issues, said Robert Walker, a former Republican Congressman from Pennsylvania who chaired the House Science Committee and also served this year on the Presidential Commission on the Implementation of the United States Space Exploration Policy.

 

One of the things that worries him most, Walker said, is people inside NASA who are more focused on protecting existing programs than on moving ahead with the agency's new vision.

 

"There are lots of people inside of NASA who believe that their individual little programs are vastly more important than the totality of the program," Walker said during the event, SpaceVision 2004, held here at the Massachusetts Institute of Technology Nov. 11-14 and hosted by the Students for the Exploration and Development of Space (SEDS) and the MIT Mars Society.

 

"So one of the things that NASA has to do is fight its way through its own culture," he explained.

 

For example, there are those inside NASA, Walker said, who see getting the space shuttle back to flying and completing the International Space Station as the "be all and end all" of the President's vision. Those people, he said, believe that "if we can do those two things over the next few years ... we can keep the shuttle flying out to about the year 2015 ... and everything will be hunky dory."

 

Flying the shuttle that long, he said, will absorb money into those two programs at the expense of the exploration mission, Walker said.

 

If managed properly, however, there will be enough money for a good exploration program that fulfills the new vision, Walker said.

 

The vision calls for the 2004 equivalent of a $16 billion a year budget over the next 30 years, a total investment of $400 billion to $500 billion, said Walker, who also chaired the Commission on the Future of the United States Aerospace Industry in 2003.

 

Retired Air Force Brig. Gen. Simon "Pete" Worden was even more harsh in his assessment of the shuttle program.

 

"I'm absolutely convinced that we don't ever need to fly the shuttle again. We've got three of them. Put them in the Smithsonian ... school parking lots. Kids can climb on them," said Worden, whose 30-year career spans a range of space duties, including stints at the White House National Space Council, the White House Office of Science and Technology and recently as a legislative fellow for U.S. Sen. Sam Brownback (R-Kan.), chairman of the Senate Commerce science, technology and space subcommittee.

 

"I'm a veteran NASA basher," said Worden, who was on detail from his job as a research professor at the University of Arizona while he worked for Brownback. Worden said his Capitol Hill experience demonstrated to him that NASA actually stood for "Never A Straight Answer."

 

Worden also criticized the state of the aerospace industry calling large aerospace contractors "the three stooges" -- companies in which the average age of engineers is far too old. He complained that the companies are not likely to reinvent themselves, and that those firms should not be expected to help shape an affordable program in response to President Bush's space vision. "We have a problem with the companies. It's not necessarily their fault. They really are Department of Defense design bureaus," Worden said.

The "wild card" in putting into action a sweeping space exploration program, Worden said, is relying on the private sector, including non-traditional start-up commercial space firms. As a first step, commercial services should provide all of NASA's launch needs, starting with the international space station, he said.

"I would suggest a proper future is that the U.S. government should perform only those functions that the private sector can't or won't do in space," Worden said.

Paul Spudis, a senior staff scientist at the Johns Hopkins University Applied Physics Laboratory in Laurel, Md., who, like Walker, was a member of the Presidential Commission on the Implementation of the United States Space Exploration Policy, said NASA has a choice: "It can go forward or it can die," he said. "That literally is the choice. NASA cannot continue in the current mode because there's no support for it."

 

As envisioned by President George W. Bush, the nation has in front of it "a journey of exploration without end," Spudis said. "Mars is on the agenda, but so are a lot of other destinations."

 

The goals are so ambitious that it's not just the next NASA program, Spudis said. "There's something much bigger at work here," he said, calling the vision a national program that involves more than just government, and must include the private sector as well.