Aerospace research (21 - 30 of 45 items)
Space Projects: Astrophysics Facility Program Contains Cost and Technical Risks
NSIAD-94-80: Published: Jan 28, 1994. Publicly Released: Jan 28, 1994.
Pursuant to a legislative requirement, GAO reviewed the National Aeronautics and Space Administration's (NASA) Advanced X-ray Astrophysics Facility (AXAF) program, focusing on the: (1) reasonableness of the NASA program cost estimate; and (2) extent that the redesigned program will provide scientific returns comparable to the original program.GAO found that: (1) NASA has made the AXAF program more...
Hubble Space Telescope
NSIAD-93-247R: Published: Jul 29, 1993. Publicly Released: Jul 29, 1993.
GAO provided information on the National Aeronautics and Space Administration's (NASA) mission to service the Hubble Space Telescope (HST). GAO found that: (1) NASA use of independent review teams and input from individual experts has increased the probability of successfully servicing HST because these sources have effectively identified potential problems and ensured implementation of solutions;...
NASA Program Costs: Space Missions Require Substantially More Funding Than Initially Estimated
NSIAD-93-97: Published: Dec 31, 1992. Publicly Released: Feb 4, 1993.
Pursuant to a congressional request, GAO provided information on the National Aeronautics and Space Administration's (NASA) historical experience at estimating space program costs.GAO found that: (1) 25 of the 29 programs reviewed required more funding than initially estimated; (2) the median estimate change for all programs was a 77-percent increase in space program costs; (3) general reasons giv...
Earth Observing System: Information on NASA's Incorporation of Existing Data Into EOSDIS
IMTEC-92-79: Published: Sep 25, 1992. Publicly Released: Oct 15, 1992.
Pursuant to a congressional request, GAO provided information on the National Aeronautics and Space Administration's (NASA) progress in incorporating earth science data into early versions of the Earth Observing System Data and Information System (EOSDIS).GAO found that: (1) in attempting to incorporate diverse EOSDIS data and informational needs, NASA has adopted an evolutionary development appro...
Space Station: Delays in Dealing With Space Debris May Reduce Safety and Increase Costs
IMTEC-92-50: Published: Jun 2, 1992. Publicly Released: Jun 2, 1992.
Pursuant to a congressional request, GAO evaluated the National Aeronautics and Space Administration's (NASA) progress in its: (1) incorporation of the current estimate of the debris environment into space station requirements; (2) effort to keep the debris environment model current; and (3) overall strategy to protect the station from space debris of various sizes.GAO found that: (1) most current...
Toward the Moon, Asteroids, and Mars
146025: Jan 1, 1992
This article, which appeared in the GAO Journal, No. 14, Winter 1991/92, discusses a practical space exploration program that would: (1) increase knowledge about how climate changes work; (2) discover metals and other resources in asteroids and develop uses for them; (3) establish a lunar base to study such problems of broad interest as the obliteration of many terrestial species 65 million years...
Questions Remain on the Costs, Uses, and Risks of the Redesigned Space Station
T-NSIAD-91-26: Published: May 1, 1991. Publicly Released: May 1, 1991.
GAO discussed the National Aeronautics and Space Administration's (NASA) redesigned space station program's costs, financial reserves, affordability, scientific benefits, and technical challenges. GAO noted that: (1) in response to congressional direction, NASA redesigned the space station, and planned to build and test a smaller station largely on the ground and then place it into orbit in segmen...
Military Space Programs: An Unclassified Overview of Defense Satellite Programs and Launch Activities
NSIAD-90-154FS: Published: Jun 29, 1990. Publicly Released: Jul 31, 1990.
Pursuant to a congressional request, GAO assessed the Department of Defense's (DOD) satellite program plans, focusing on the relationships between and cost of DOD satellites, launch vehicles, and launch facilities.GAO found that: (1) DOD satellites perform a wide variety of missions to support U.S. national security interests and pursue advances in research and technology; (2) due to launch failur...
Space Transportation: NASA Has No Firm Need for Increasingly Costly Orbital Maneuvering Vehicle
NSIAD-90-192: Published: Jul 31, 1990. Publicly Released: Jul 31, 1990.
Pursuant to a congressional request, GAO reviewed the National Aeronautics and Space Administration's (NASA) Orbital Maneuvering Vehicle (OMV) program, focusing on: (1) the need to continue the OMV program in light of reductions in OMV capabilities; and (2) the reasons for changes in OMV program costs and schedules.GAO found that: (1) the OMV conceptual design has evolved over a number of years; (...
Space Program: Space Debris a Potential Threat to Space Station and Shuttle
IMTEC-90-18: Published: Apr 6, 1990. Publicly Released: Apr 23, 1990.
Pursuant to a congressional request, GAO reviewed the National Aeronautics and Space Administration's (NASA) response to the space debris issue, focusing on: (1) its plans and cost estimates for protecting the planned space station from debris; (2) NASA and Department of Defense (DOD) debris tracking capabilities; and (3) the effect of orbital debris on space shuttle operations.GAO found that: (1)...