NASA Administrator Charles Bolden responds to a reporter's question during an overview briefing on NASA's fiscal year 2013 budget, Monday, Feb. 13, 2012 at NASA Headquarters in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Chief Financial Officer Elizabeth Robinson delivers an overview briefing on NASA's fiscal year 2013 budget, Monday, Feb. 13, 2012 at NASA Headquarters in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Charles Bolden responds to a reporter's question during an overview briefing on NASA's fiscal year 2013 budget, Monday, Feb. 13, 2012 at NASA Headquarters in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Charles Bolden, center, is seen during an overview briefing on NASA's fiscal year 2013 budget, Monday, Feb. 13, 2012 at NASA Headquarters in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Chief Financial Officer Elizabeth Robinson delivers an overview briefing on NASA's fiscal year 2013 budget, Monday, Feb. 13, 2012 at NASA Headquarters in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Charles Bolden listens as NASA Chief Financial Officer Elizabeth Robinson delivers an overview briefing on NASA's fiscal year 2013 budget, Monday, Feb. 13, 2012 at NASA Headquarters in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Deputy Administrator Lori Garver discusses details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Chief Financial Officer Elizabeth Robinson, presents details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Associate Administrator Robert Lightfoot discusses details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Chief Financial Officer Elizabeth Robinson, presents details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Associate Administrator Robert Lightfoot discusses details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Deputy Administrator Lori Garver discusses details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Deputy Administrator Lori Garver discusses details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Charlie Bolden and NASA Deputy Administrator Lori Garver present details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Charlie Bolden, listens as NASA Chief Financial Officer Elizabeth Robinson, right, presents details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

Patricia Falcone, Associate Director, National Security and International Affairs Division, White House Office of Science and Technology Policy, delivers remarks during a Fiscal Year 2014 budget briefing held at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Charlie Bolden and NASA Deputy Administrator Lori Garver present details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

Patricia Falcone, Associate Director, National Security and International Affairs Division, White House Office of Science and Technology Policy, is seen during a Fiscal Year 2014 budget briefing held at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Charlie Bolden, delivers remarks during a White House Office of Science and Technology Policy (OSTP) Fiscal Year 2014 budget briefing held with with Dr. John P. Holdren, Director of OSTP, Patricia Falcone of OSTP, Francis Collins from NIH, Cora Marrett from NSF, and Kathryn Sullivan from NOAA, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

Director of the National Institutes of Health (NIH) Francis S. Collins, M.D., Ph.D., delivers remarks during a White House Office of Science and Technology Policy (OSTP) Fiscal Year 2014 budget briefing held with with Dr. John P. Holdren, Director of OSTP, Patricia Falcone of OSTP, Charlie Bolden from NASA, Cora Marrett from NSF, and Kathryn Sullivan from NOAA, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

Dr. John P. Holdren, Assistant to the President for Science and Technology, Director of the White House Office of Science and Technology Policy, speaks during a Fiscal Year 2014 budget briefing held with Patricia Falcone of OSTP, Charlie Bolden from NASA, Francis Collins from NIH, Cora Marrett from NSF, and Kathryn Sullivan from NOAA, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

CAPE CANAVERAL, Fla. -- At NASA’s Kennedy Space Center in Florida, Center Director Bob Cabana at left and NASA Administrator Charles Bolden hold an all-hands meeting in the Training Auditorium to present the proposed fiscal year 2013 NASA budget to civil servant and contractor employees. Bolden and Cabana explained how the budget will affect the agency and specifically Kennedy Space Center. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At NASA’s Kennedy Space Center in Florida, Center Director Bob Cabana at left and NASA Administrator Charles Bolden hold an all-hands meeting in the Training Auditorium to present the proposed fiscal year 2013 NASA budget to civil servant and contractor employees. Bolden and Cabana explained how the budget will affect the agency and specifically Kennedy Space Center. Photo credit: NASA/Kim Shiflett

NASA Deputy Administrator Lori Garver (right) and Stennis Space Center Deputy Director Rick Gilbrech address NASA employees during a Feb. 23, 2012, all hands meeting onsite. Garver visited Stennis Space Center to meet with senior managers, members of the media and NASA employees to discuss the space agency's proposed budget for fiscal year 2013.

NASA Administrator Charlie Bolden, left, NASA Deputy Administrator Lori Garver, NASA Associate Administrator Robert Lightfoot, and NASA Chief Financial Officer Elizabeth Robinson, right, present details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

CAPE CANAVERAL, Fla. -- At NASA’s Kennedy Space Center in Florida, Center Director Bob Cabana at left and NASA Administrator Charles Bolden hold an all-hands meeting in the Training Auditorium to present the proposed fiscal year 2013 NASA budget to civil servant and contractor employees. Bolden and Cabana explained how the budget will affect the agency and specifically Kennedy Space Center. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Bob Cabana, director of NASA's Kennedy Space Center in Florida, center, discusses the fiscal year 2013 budget proposal for the space agency, which was released today, with members of the news media at the NASA News Center at Kennedy. Cabana is a former space shuttle astronaut who became the Kennedy director in October 2008. Photo credit: NASA/ Kim Shiflett

Dr. John P. Holdren, Assistant to the President for Science and Technology, Director of the White House Office of Science and Technology Policy, speaks during a Fiscal Year 2014 budget briefing held with Patricia Falcone of OSTP, Charlie Bolden from NASA, Francis Collins from NIH, Cora Marrett from NSF, and Kathryn Sullivan from NOAA, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

CAPE CANAVERAL, Fla. -- Bob Cabana, director of NASA's Kennedy Space Center in Florida, left, discusses the fiscal year 2013 budget proposal for the space agency, which was released today, with members of the news media at the NASA News Center at Kennedy. Cabana is a former space shuttle astronaut who became the Kennedy director in October 2008. Photo credit: NASA/ Kim Shiflett

NASA Deputy Administrator Lori Garver and NASA Associate Administrator Robert Lightfoot, right, listen as NASA Administrator Charlie Bolden discusses details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Charlie Bolden, left, NASA Deputy Administrator Lori Garver, NASA Associate Administrator Robert Lightfoot, and NASA Chief Financial Officer Elizabeth Robinson, right, present details of the fiscal year 2014 budget request in an agency-wide all hands meeting televised from NASA Headquarters on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

Dr. John P. Holdren, Assistant to the President for Science and Technology, Director of the White House Office of Science and Technology Policy, speaks during a Fiscal Year 2014 budget briefing held with Patricia Falcone of OSTP, Charlie Bolden from NASA, Francis Collins from NIH, Cora Marrett from NSF, and Kathryn Sullivan from NOAA, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

Patricia Falcone, Associate Director, National Security and International Affairs Division, White House Office of Science and Technology Policy, delivers remarks during a Fiscal Year 2014 budget briefing with Dr. John P. Holdren, Director of OSTP, Charlie Bolden from NASA, Francis Collins from NIH, Cora Marrett from NSF, and Kathryn Sullivan from NOAA, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

Dr. John P. Holdren, Assistant to the President for Science and Technology, Director of the White House Office of Science and Technology Policy, speaks during a Fiscal Year 2014 budget briefing held with Patricia Falcone of OSTP, Charlie Bolden from NASA, Francis Collins from NIH, Cora Marrett from NSF, and Kathryn Sullivan from NOAA, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

CAPE CANAVERAL, Fla. -- Bob Cabana, director of NASA's Kennedy Space Center in Florida, left, discusses the fiscal year 2013 budget proposal for the space agency, which was released today, with members of the news media at the NASA News Center at Kennedy. Cabana is a former space shuttle astronaut who became the Kennedy director in October 2008. Photo credit: NASA/ Kim Shiflett

Director of the National Institutes of Health (NIH) Francis S. Collins, M.D., Ph.D., delivers remarks during a White House Office of Science and Technology Policy (OSTP) Fiscal Year 2014 budget briefing held with with Dr. John P. Holdren, Director of OSTP, Patricia Falcone of OSTP, Charlie Bolden from NASA, Cora Marrett from NSF, and Kathryn Sullivan from NOAA, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

CAPE CANAVERAL, Fla. -- Bob Cabana, director of NASA's Kennedy Space Center in Florida, right, discusses the fiscal year 2013 budget proposal for the space agency, which was released today, with members of the news media at the NASA News Center at Kennedy. Cabana is a former space shuttle astronaut who became the Kennedy director in October 2008. Photo credit: NASA/ Kim Shiflett

NASA Administrator Charlie Bolden, delivers remarks during a White House Office of Science and Technology Policy (OSTP) Fiscal Year 2014 budget briefing held with with Dr. John P. Holdren, Director of OSTP, Patricia Falcone of OSTP, Francis Collins from NIH, Cora Marrett from NSF, and Kathryn Sullivan from NOAA, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

Dr. Kathryn D. Sullivan, Acting Under Secretary of Commerce for Oceans and Atmosphere and Acting NOAA Administrator, delivers remarks during a White House Office of Science and Technology Policy (OSTP) Fiscal Year 2014 budget briefing held with with Dr. John P. Holdren, Director of OSTP, Patricia Falcone of OSTP, Charlie Bolden from NASA, Francis Collins from NIH, and Cora Marrett from NSF, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)

Dr. Kathryn D. Sullivan, Acting Under Secretary of Commerce for Oceans and Atmosphere and Acting NOAA Administrator, delivers remarks during a White House Office of Science and Technology Policy (OSTP) Fiscal Year 2014 budget briefing held with with Dr. John P. Holdren, Director of OSTP, Patricia Falcone of OSTP, Charlie Bolden from NASA, Francis Collins from NIH, and Cora Marrett from NSF, at the American Association for the Advancement of Science (AAAS) on Wednesday, April 10, 2013 in Washington. Photo Credit: (NASA/Bill Ingalls)