Author: United States. Congress. House. Committee on Science and Technology. Subcommittee on Space Science and Applications
Publisher:
ISBN:
Category : Astronautical instruments
Languages : en
Pages : 292

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Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 56

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Book Description

Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309463831
Category : Science
Languages : en
Pages : 127

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Book Description
NASA's Science Mission Directorate (SMD) currently operates over five dozen missions, with approximately two dozen additional missions in development. These missions span the scientific fields associated with SMD's four divisionsâ€"Astrophysics, Earth Science, Heliophysics, and Planetary Sciences. Because a single mission can consist of multiple spacecraft, NASA-SMD is responsible for nearly 100 operational spacecraft. The most high profile of these are the large strategic missions, often referred to as "flagships." Large strategic missions are essential to maintaining the global leadership of the United States in space exploration and in science because only the United States has the budget, technology, and trained personnel in multiple scientific fields to conduct missions that attract a range of international partners. This report examines the role of large, strategic missions within a balanced program across NASA-SMD space and Earth sciences programs. It considers the role and scientific productivity of such missions in advancing science, technology and the long-term health of the field, and provides guidance that NASA can use to help set the priority of larger missions within a properly balanced program containing a range of mission classes.

Author: United States. General Accounting Office
Publisher:
ISBN:
Category : Orbiting astronomical observatories
Languages : en
Pages : 40

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Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :

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Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Author: United States. General Accounting Office. National Security and International Affairs Division
Publisher:
ISBN:
Category :
Languages : en
Pages : 32

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Book Description

Author: United States. Congress. House. Committee on Appropriations. Subcommittee on HUD-Independent Agencies
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1722

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Book Description

Author: United States. Congress. House. Committee on Science, Space, and Technology
Publisher:
ISBN:
Category :
Languages : en
Pages : 180

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Book Description

Author: United States. General Accounting Office
Publisher:
ISBN:
Category : Astronomical observatories
Languages : en
Pages : 60

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Book Description

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309095301
Category : Science
Languages : en
Pages : 160

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Book Description
The Hubble Space Telescope (HST) has operated continuously since 1990. During that time, four space shuttle-based service missions were launched, three of which added major observational capabilities. A fifth â€" SM-4 â€" was intended to replace key telescope systems and install two new instruments. The loss of the space shuttle Columbia, however, resulted in a decision by NASA not to pursue the SM-4 mission leading to a likely end of Hubble's useful life in 2007-2008. This situation resulted in an unprecedented outcry from scientists and the public. As a result, NASA began to explore and develop a robotic servicing mission; and Congress directed NASA to request a study from the National Research Council (NRC) of the robotic and shuttle servicing options for extending the life of Hubble. This report presents an assessment of those two options. It provides an examination of the contributions made by Hubble and those likely as the result of a servicing mission, and a comparative analysis of the potential risk of the two options for servicing Hubble. The study concludes that the Shuttle option would be the most effective one for prolonging Hubble's productive life.