President Obama will announce his administration's vision for America's space program during a visit to Florida on Thursday, according to documents provided to CNN by a White House official.

"The Administration is committed to a bold, new approach to human spaceflight, and is increasing the NASA budget by $6 billion over the next five years in order to embark on this ambitious strategy that will foster the development of path-breaking technologies, increase the reach and reduce the cost of human spaceflight, and help create thousands of new jobs," the documents say.

The future of the space agency as outlined in the White House documents would include a multi-billion-dollar moderization of Kennedy Space Center, expansion of private-sector and commercial space industries, creation of thousands of jobs and eventually human travel to Mars.

The president's announcement will come during what have been uncertain times surrounding the agency. The space shuttle is scheduled for retirement at year's end, with just three scheduled launches remaining. Obama has cancelled the Bush administration's Constellation moon program. The space agency had already spent about $9.5 billion on that project to develop a next-generation rocket and the crew capsule.

Allard Beutel, news chief at the Kennedy Space Center, told CNN that layoffs at the center will likely reach "the 7,000 range" with the end of the shuttle and the cancellation of the Constellation program.

Obama's plans would shift some funding away from NASA's costly human spaceflight program to NASA's scientific programs, including robotic missions to other planets.

The president's budget would also provide funding to private launch companies to develop spacecraft to ferry astronauts.

Once the space shuttle is retired, U.S. astronauts will need to ride Russian Soyuz rockets to reach and return from the International Space Station. It's expected to take several years or more before commercial launch companies are capable of carrying astronauts into orbit.

"This new strategy means more money for NASA, more jobs for the country, more astronaut time in space, and more investments in innovation," the documents from the Obama administration say.

"It will result in a longer operating lifetime for the International Space Station, new launch capabilities becoming available sooner, and a fundamentally more ambitious space strategy to take us to an increased number of destinations and to new frontiers in space.

"By undertaking this strategy, we will no longer rely on our past achievements, and instead embrace a new and bold course of innovation and discovery."

During a briefing in early April, NASA Administrator Charles Bolden praised the new future being charted for the agency.

"This budget provides an increase to NASA at a time when funding is scarce," Bolden said. "It will enable us to accomplish inspiring exploration, science and (research and development), the kinds of things the agency has been known for throughout its history."

The budget "enables NASA to set its sights on destinations beyond Earth orbit and develop the technologies that will be required to get us there, both with humans and robots," Bolden said.

"We're talking about technologies that the field has long wished we had but for which we did not have the resources," he said.

"These are things that don't exist today but we'll make real in the coming years. This budget enables us to plan for a real future in exploration with capabilities that will make amazing things not only possible, but affordable and sustainable."

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